Genetics and Evolution Essay Example | Topics and Well Written Essays - 2500 words

Genetics and Evolution - Essay Example Thus in such situations the characters used to recognise the species becomes merely diagnostic, not distinctive. Biologically speaking, these are a connected series of the species in neighbouring areas which interbreed with two end populations which are too phenotypically and geographically separated that they cannot interbreed. These two genetically and phenotypically diverse populations which represent the end populations may exist in the same geographic region, yet due to genetic and phenotypic diversity would not interbreed. As an example, the case of Larus gulls can be taken, the different species of which form a ring around the North Pole. The Lesser Black-beaked Gulls in Siberia form a part of this ring, and although they descend from the same species, adjacent Herring gulls are so different from them that they do not interbreed. Earnst Mayr's Biological species concept tends to recognise species based on defined phenotypic characters. Mayr defined species as groups of interbreeding populations, which do not reproduce across other species. This builds in a concept of reproductive isolation from other such groups. Particular species specific phenotypic characters or attributes prevent interbreeding with other species. Although the biological species concept places the taxonomy of natural species within the concept of population genetics, it fails to explain the ring species. Although there are apparent differences between naturally occurring ring species, the phenotypic distinction within the same or adjacent geographic areas blur, so in actuality, they interbreed. Secondly, the existence of connecting population distinguishes the ring species from two separate species. These features raise questions about the species concept (Liebers et al., 2004). Q2. Neo-Darwinism and Lamarckism The Neo-Darwinism of evolution contends that all life on earth arose from a common ancestor. This was postulated to occur due to random mutations of genes, which survived following the process of natural selection. Where these mutations were beneficial and had survived natural selection, it led to a replicative process leading to more offspring. On the contrary, those with deleterious mutations have fewer or no offspring. Some of these mutations which were beneficial could help new adaptations to altered environments changed or new. These adaptations were incorporated in the genetic traits leading to generation of newer species. It has been postulated that the genetic makeup of the complex organisms is a result of duplication and useful mutation of existing genes of simple organisms. Lamarck's theory of evolution on the other hand posits that when environmental conditions change, an organism goes through the need for changes. With these changes, organs or organ systems may also go th rough the drives of these changes, which ultimately would need use or disuse of some organs. If used, these organs will develop, and if disused, these organs will demonstrate diminution. In this way a new characteristic or genetic trait is acquired. When acquired traits run in generations, these become hereditary, and the organism demonstrates an evolution. These two theories differ in the concept of causation of mutation. While the neo-Darwinian

Step Brothers (2008) Analysis

Step Brothers (2008) Analysis Step Brothers (2008), directed by Adam McKay, is a raunchy, funny film for comedy audiences. It stars Will Ferrell and Jon C. Reilly as Brenan and Dale. These two single, and very juvenile, forty something, guys lives change once their parents, played by Oscar winning. Mary Steenbuge and Richard Jenkins, fall in love and get married. These two men become best of friends and brothers, as well as experience for the first time their struggles as adults for the first time. In this comedy though it is raunchy and stupid, offers a true message of unconditional love. Many critiques have both negative and positive feedback concerning this film. However, I think that this film is inappropriately hilarious and embraces the goof in all of us, in every charter in this story. In this movie, two middle -aged men in their forties, Dale, and Brenan, live together by force upon their parents marriage union. This takes place in present time in a normal American suburban family situation. These men are like overgrown teenagers eating cereal and nachos for breakfast, video games, no jobs and sponging off the benefit of each single parent. After becoming comfortable with the living arrangement and each other, Dale and Brenan become the best of friends. The plot twists as their adventures dont always take them in the same direction. Their parents want them to grow up and get jobs and move out so they can live their lives and travel on the boat. Dale becomes a talented chef and Brenan begins working for his younger brother, Derek and falling in love with his therapist. Brenans brother Derek is a jerk. He is spoiled and selfish and is mean to his wife, who also has a cheesy, dramatic affair with Dale in the movie. Ultimately in the end everything does work out for e veryone. I found this movie to be very funny and well worth the watch. It offers a level of adult humor on a juvenile twist for those audience members who can appreciate its silly raunchy humor. The epic scenes between the two brothers allows those of us with siblings to identify with some of the disagreements between the brothers. From the I am going to mess up your stuff aspect to the Ill kill you, I hate you situations, and all the hilarious sleep walking in between, the critics are somewhat divided about its overall ratings. Calvin Wilson (2008) from the St Louis Post Dispatch states, why result to gross-out tactics when your premise is strong enough to allow for a more sophisticated approach (para. 2). I feel he has a point but this was not the approach for this film. Wilson states that this is Bottom line, a crude but hilarious comedy (headline). Roger Ebert (2008) stated he did not agree on the critic websites. He said that the movie left him feeling unclean because of the raunchy humo r and adult situations and violence. His overall response was dont watch it on an airplane, dont check it out on cable, dont walk past the bargain basement bin where it is sold (para. 4). I can understand how both the critic and the website can feel this way as this kind of humor is not for every ones eyes and ears. The adult scene in the bathroom where the affair between Dereks wife and Dale is not very tasteful and does kind of leaving you feeling gross. I think it could have been left out. Quite frankly, the violence factor in the film is mild. The men are portrayed as overgrown teens and in my opinion do not behave any more violent to one another than teen brothers would be. The film just dramatized it and made it more on an adult level of humorous violence. Likewise, David Marchese (2014) for Rolling Stone Magazine shares common ground with his article titled, Finding the Dinosaur: A Step Brothers Appreciation. Marchese starts his piece by saying, Step Brothers, more and truer laughs than any other Ferrell and McKay movie (para.7). Whereas, Peter Bradshaw ( ), from the Guardian.com, doesnt feel the same, stating that this is another unashamedly juvenile comedy from the awe-inspired busy Judd Apatow production line (para. ). I agree the plot has a few flaws, because the audience doesnt know how these two men became the way they are while everyone seems to be normal functioning adults leaving some of the films elements farfetched, such as the affair with Dale and Dereks wife and the relationship with Brenan and his therapist in the end. The acting in Step Brothers is great and the critics do agree. Kyle Smith (2008) from the New York Post, agrees with my opinion saying There is too much funny here for a movie and further elaborates Step Brothers should be a TV show (review 1). The chemistry between Ferrell and Reilly is amazing. Will Ferrell plays Brenan whose mother is the one who married Dales father. Brenan is like a spoiled fourteen-year-old and John C Reilly plays Dale, another likeminded man acting like an overgrown fourteen-year-old. They are grown men and have the whole sibling rivalry scene to the point. When they get into the argument over whether or not Brenan touched Dales drum set leading to the scene where they try to bury each other alive in the yard and the face off in the front yard leaving each other knocked out while the mother is spraying them with the hose. You are left with a lot of laughter. If in fact, this movie could be constructed into a television show, many people will watch it. When Fer rell and Reilly do the sleepwalking scene, you can really believe the character. Putting couch pillows in the oven, dumping coffee all over and throwing coffee cups, walking around saying weird things like Hi Im Carol, and Carols on fire, I laugh still. Mary Steenburg who plays Brenans mother, Nancy Huff, is a tired woman. She gives the impression she is getting too old to be babysitting and really wants to get on with her life before time runs out. Richard Jenkins who plays Dales father, Robert Doback, is a professional doctor, who just wants to sail around the world with his wife and retire. Neither one of these two can do that because of their sons. This makes a big problem in the marriage and they start considering divorcing, but all is well in the end. The director chose to present the story in a way that most people in a mixed family would be able to relate to. I like the choice of angles the director used to capture the exact image of the funnier moments in the film. This allowed the audience to be right there in the scene. In the sleep walking scene for example, the lighting is set perfectly to show it is night time and it is late while everyone is sleeping. The angles and lighting capture the details that make these scenes funny by showing expression on the face[AW1], for example when they are sleeping after the sleep walking scene, dale is shown with mustard on his face and a piece of bread in his hand. Another way the characters were walking or jumping around, the camera shows emphasis on their legs when running or when talking you can see their facial expressions close up like the camera zoom, clearly to match the scene. Adam McKay is an American film director and producer. He was also head writer for Saturday Night Live for two seasons, Winston Cook-Wilson (2016), states in an article for Spin Magazine. that Step Brothers is, dramatically, and politically charged, Oscar worthy fare (Cook-Wilson). The costumes, lighting, and sets were enjoyable and amusing. In the beginning when Brenan and Dale met the scene is set at the afternoon in the front yard and they were both dressed like two fourteen-year-old kids with some old graphic t-shirts on and stupid haircuts. Other examples are when Dale and Brenan do the video of their new company Prestige Worldwide. It is a nice sunny day and they are on Dales fathers boat dressed in jackets and scarfs like wealthy people flaunting around like they are famous also, when they are shown being responsible adults at their jobs. Dale dressed in a professional chef uniform and Brenan in business clothes. These different scenes and sets are important to the movie. The good weather and sunshine keeps the atmosphere pleasant and happy for the audience. The different costumes allow you to visualize the scene and characters as intended. The music in the film has some catchy tunes and familiar with most American people. From Bonnie Rait, Guns N Roses, Hall and Oates, and The Mighty Mighty Bosstones there is a song everyone is going to know and sing along. The beginning tune kind of amps you up to laugh and gets you excited to watch the film. You just know it is going to be good. Guns N Roses and Bonnie Rait to very good playing musicians are used in this film. People are drawn to artists that they know. When Derek performed, the talent show scene with Ice Ice Baby, my friend knew it as soon as it came on and laughed. It was very popular in America in the 90s. In conclusion to my review I will admit that Step Brothers is not intended for all audiences. I would recommend Step Brothers to anyone needing a good laugh. This story will help you laugh at the funny stories of you and your own siblings or mixed family mergers. If you are a Ferrell and Reilly fan and appreciate the comedy from them, like the sleep walking scene or the music video for Prestige Worldwide, or havent had the opportunity you will want to see this film. If you dont find sibling rivalry like when they fight over the drum set or goofy and gross humor like licking the dog poop, that exceeds adult humor on a juvenile maturity level, then I would not suggest this film for you. References K. (2016,May 27). [Review of the film Step Brothers]. Cinemablend. Retired January 31, 2017. From http:// Step Brothers. Metacritic. Columbia Pictures, 25 July 2008. Web. 30 Jan. 2017. Ebert, Roger. Step Brothers Movie Review Film Summary (2008) | Roger Ebert. All Content. N.p., 23 July 2008. Travers, Peter. Step Brothers. Rolling Stone. Rolling Stone, 07 Aug. 2008. Web. 30 Jan. 2017.Web. 30 Jan. 2017. McKay, A. (Director(. (2008). Step Brothers [DVD]. New York: Sony. 22, 2016 Winston Cook-Wilson// November, and Winston Cook-Wilson. Big Short Director Adam McKay Is Writing and Directing a Dick Cheney Movie. Spin. N.p., 22 Nov. 2016. Web. 30 Jan. 2017. Wilson, Calvin. Step Brothers: B. Stltoday.com. N.p., 25 July 2008. Web. 30 Jan. 2017. Bradshaw, Peter. Film Review: Step Brothers. The Guardian. Guardian News and Media, 28 Aug. 2008. Web. 30 Jan. 2017. [AW1]

Ancient Egypt :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  Ancient Egypt was a very important time in our time period. They had their own way of life. Egyptians had their own writing, burials, government, religion, cooking, and games. They were educated people with many talents. They were good with their hands and brains. Ancient Egyptians were a magnificent race of people.   Ã‚  Ã‚  Ã‚  Ã‚  The Ancient Egyptians called their country Kemet, which means â€Å"Black Land.† The dark soil from the Nile River was very fertile. The Nile overflowed at the same time every year, leaving farmers with very fertile soil. The Nile provided much needed water for their crops during the dry season by using their irrigation system. The Nile River also provided the Egyptians with drinking water, and a way for them to travel, allowing them to explore and trade. In addition, the desert around the river was called â€Å"Red Land† by the Egyptians. This is where they lived, grew and prospered. The desert provided much gold for the Egyptians to trade with other countries or to keep for themselves. They brought back silver from Syria, cedar wood, oils, and horses from Lebanon, copper from Cyprus, gems from Afghanistan, ebony, wood, and ivory from Africa, and incense from Punt.   Ã‚  Ã‚  Ã‚  Ã‚  Egyptians cherished family life the way we cherish food or money. Children were considered a blessing. They prayed for them and used magic to have children, but if a couple could not conceive they adopted. Men were the head of the household and the oldest son inherited everything of the father’s.  Ã‚  Ã‚  Ã‚  Ã‚  Egyptian women were to obey their fathers and husbands, but were equal in many other ways. For example, women could have jobs, some rights in court cases, and they were able to own land. Women were also allowed to own businesses. Only noble women, however, could be priestesses. The women raised the children and took care of the house. Wealthy families would hire maids and nannies to do such things. Divorce was not common in Ancient Egypt, though it was an option. Problems were talked about between families, and if they could not be settled a divorce would take place. Some women became rulers but only in secret. The only woman who ruled as a phara oh in the open was Queen Hatsheput. Ordinary men normally had one wife, while pharaohs and kings had several. Most marriages were arranged by parents. Most girls married at age twelve while boys were usually a little older.

Human Characteristic traits that make them good or evil Essay

Humans can be good, evil, or even both, and the characteristics they portray represent who they are. Throughout many cultures around the world humans have characteristic traits that are good and evil. Universally speaking good defined by Webster’s dictionary: Being positive or desirable in nature; not bad or poor. And Evil: Morally bad or wrong; wicked. Now one can say that bravery is a good characteristic for one to acquire. On the other hand, tricking/fooling/lying to some one is a bad characteristic for a human to posses. Honesty is generally identified as a good trait as well. Being brave and honest are great qualities identified around the world as good traits for a human to either receive or retain. But, Lying or tricking someone is known to be an evil trait for a human to exercise. In America and other countries around the world bravery is a very important quality for a human to own. In the past it was only men who could be brave, after all men were the ones fighting in the wars; it was their acts of bravery that has made the world what it is today. Now women are able to actually show how brave we are. There are now many women in war and all of them are brave. But, being brave does not just mean fighting for your country. It means being able to fight, think, and even feel pain for someone else. It can be as simple as a young child taking the training wheels off their bicycle. In the story And Clay we are Created two characters show tremendous acts of bravery, Azucena and Rolf. Azucena is a young 13 year old girl who is trapped for many days. Rolf is a reporter who over comes a fear while talking with her. In the end Azucena and Rolf both overcome a fear of death. Overcoming a fear is simply brave. Honesty is sometimes how the world goes round’. If no one was honest then how would anyone be able to function or trust anyone? The world would be even more of a crueler place than it is now. Every employer is looking for that honest person. Everyone’s vote goes to who they think is the more honest candidate. When people are honest they acquire a good reputation i. e. Honest Abe, that of course being one of our good presidents Abraham Lincoln. In the story A Piece of String the main character is accused of stealing a wallet full of money. His accuser said he saw him picking it up and then acting like he was looking for something. It was actually him just picking up a piece of string. After the main character got a bad reputation the wallet was returned, but unfortunately it didn’t instantly make him an honest person. Lying/ tricking a person or many people can be definitely looked on upon as evil or as a sin. Throughout US history many Presidents have lied. A couple of examples are Nixon and Clinton. But, not only in politics is where liars are found. They are found in court, on TV, and even in novels. For example Anansi in Anansi Owns All Tales That Are Told is a liar. He tricks animals and other insects into closed devices so he can bring them to the sky god, in order to own all stories that are told. Whether a person is good or evil depends on their traits as an individual. Sometimes a person is good and evil. And sometimes people are just plain evil. But Honesty and Bravery will always be looked upon as good traits. And Lying/ tricking will always be looked down upon by the human race.

Post-war inequalities in British health and education Essay

Poverty or low disposable income often results in an inadequate environment and not only for the obvious lack of resources such as books, pens and paper. Damp housing can have severe effects on health resulting in lower school attendance rates, or low concentration levels if child is often feeling unwell. Not having an allocated area to study is also an important factor. Kellet and Dar (2007) discovered that in low income areas where housing was cramped, children claimed that ‘Television was a distraction from homework because of the noise†¦ Other distractions in the home environment were smoking, swearing, banging and loud music. ‘ Also that homework clubs were vital to the success of children from disadvantaged families. This study was performed by children, with the guidance and research techniques of sociologists, there for it is perceived as having a deeper and more honest insight in to children’s issues. Other class factors resulting in underachievement may be less obvious. Values differ between class perspectives and affect a child’s motivation. Bowes et al (1990, p119) states that working class children are more likely to leave school as soon as they can, to find a steady job. ‘ Where as the middle class value differed gratification and ‘Socialise their children in to wanting to remain in education in the hope of a better job when they do leave. ‘ This was confirmed by the Child Development survey, which found middle class students staying on at school and achieving better examination results. The Home and The school study (1964) found that ‘the degree of parent’s interest in their children’s education was the single, most important factor affecting attainment. ‘ (Haralambos et al, 2004, p102). It found that ‘Middle class parents visited school more†¦ and were generally more interested in their child’s education. ‘ It also states that ‘an upper middle class child was five times more likely to get in to grammar school than a child from the lower working class. ‘ Further more ‘most of the working class pupils who were successful, came from homes where the mothers were â€Å"sunken middle class. † They wanted their children to do well and ‘expressed much parental interest,’ Bowes et al (1990, p119). This is because parental interest not only has a direct affect on the motivations and values of a child, but also on the school environment. Middle class parents, who often have more spare time and disposable income to invest in fundraising and extra curricular activities, can raise the standards of a school immeasurably. Making school a fun place to be, that is enjoyed by all the family, creates the positive learning environment that children thrive in. Quite understandably most working class parents are to busy â€Å"earning a crust† to find the time and energy to invest in such endeavors and as such adopt an â€Å"Education is the schools job† attitude. It is also understood that language has had a negative affect on the working class’s academic attainment. Professor Basil Bernstein has shown that the middle and lower classes use different patterns of speech. He called these patterns linguistic codes. According to Bernstein, most middle class children have been socialised in both restricted and elaborate codes, and are fluent in each. Whereas working class children are limited to the restricted code. Since teachers tend to be middle class and use the elaborate code, working class pupils are placed at a distinct disadvantage. There is also explanation for underachievement to be found in the â€Å"hidden curriculum† of a working class teacher, that is the subliminal messages he passes to children without intention. The cultural depravation theory states that children in the bottom classes are ‘deprived of important values, attitudes, experiences and skills which are essential to educational success,’ (Haralambos et al, 2004, p102). This has been strongly criticised and there is evidence that if class differences in culture exist, they are slight and of little significance.

abstract

abstract -ROC greater than zero implies an increase in upward momentum.-ROC less than zero implies a decrease in downward momentum.-Divergence indicates a sharp decline if ROC is sloping downwards.-ROC expands into positive territory as an advance accelerates.-ROC dives deeper into negative territory as a decline accelerates.-An upward surge in the Rate-of-Change reflects a sharp price advance.-A downward plunge indicates a steep price decline.-Oversold Rate-of-Change: This scan reveals stocks with a positive 125-day Rate-of-Change and an oversold 21-day Rate-of-Change (below -8%). Once these criteria are met, a bullish signal is triggered when the stock closes above the 20-day SMA.-Overbought Rate-of-Change: This scan reveals stocks with a negative 125-day Rate-of-Change and an overbought 21-day Rate-of-Change (above 8%). Once these criteria are met, a bearish signal is triggered when the stock closes below the 20-day SMA.-ROC greater than zero implies an increase in upward momentum.Crip han dsign.Gangs may or may not be facilitated in a branch of higher and lower members, mimicking a military model. Gangs often have a loosely defined set of goals, and are often involved in delinquent activities.A socially approved form of a gang is a club. Americans generally view clubs as character building leadership opportunities; whereas, individuals typecast into gangs are persecuted as criminals. Clubs are formed with constructive goals in mind, such as making it easier for its members to find parts for a particular brand of automobile. Socioeconomic class, academic achievement, or perceived roles in society for its members all play a part in the preferential treatment given to a group which a society deems a club rather than a gang. For instance, parts of the public anticipated that motorcycle riders would cause a massive...

Tibetan Silver

Tibetan Silver Tibetan Silver is the name given to the metal used in some jewelry available online, such as on eBay or via Amazon. These items typically ship from China. Have you ever wondered how much silver is in Tibetan Silver or about the chemical composition of Tibetan Silver? Would you be surprised to learn that this metal can be dangerous? Tibetan Silver is a silver-colored alloy consisting of copper with tin or nickel. Some items described as Tibetan Silver are cast iron that has been plated with the silver-colored metal. Most Tibetan Silver is copper with tin rather than copper with nickel because nickel causes skin reactions in many people. Health Hazards Ironically, the metal often contains other elements that are much more toxic than nickel. It is inadvisable for pregnant women or children to wear items made with Tibetan Silver because some of the items contain high levels of dangerous metals, including lead and arsenic. eBay issued a buyer warning so that bidders would be aware of the metallurgical testing conducted on Tibetan Silver items and the possible toxicity of these items. In six of seven items that were analyzed using x-ray fluorescence, the primary metals in the Tibetan Silver were actually nickel, copper, and zinc. One item contained 1.3% arsenic and extremely high lead content of 54%. A separate sampling of items revealed comparable compositions, with trace amounts of chromium, aluminum, tin, gold, and lead, although in that study, all of the samples contained acceptable levels of lead. Note that not all items contain toxic levels of heavy metals. The warning for pregnant women and children is intended to prevent accidental poisonings. Other Names Sometimes comparable metallurgical compositions have been called Nepalese silver, white metal, pewter, lead-free pewter, base metal, or simply tin alloy. In the past, there was an alloy called Tibetan Silver that actually did contain the element silver. Some vintage Tibetan silver is sterling silver, which is 92.5% silver. The remaining percent could be any combination of other metals, although usually, it is copper or tin.