hanging. In addition‚ there was the need for social‚ sexual‚ and reproductive conduct in early hominids (Schmitt and Lemelin‚ 2002). This adaptation influenced survivorship and birthrate‚ monogamous mating structure and male provisioning of food to mate and off springs. a At some point in human evolution‚ there was increased need to reduce body temperatures through increased heat loss‚ increased cooling‚ reduced heat gain and reduced water requirements. For these reasons‚ the bipedal stance was the
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Multiple Ethnic Groups in Jamaica Emergence of the Nation. Independent country in the Caribbean and a member of the British Commonwealth of Nations‚ located south of Cuba and west of Haiti in the Caribbean Sea. Jamaica is the third largest island of the Greater Antilles (island chain in the West Indies that encompasses the nations of Cuba‚ Haiti‚ Dominican Republic‚ and Puerto Rico).The Jamaican population is made up numerous ethnic groups; The most dominant ethnic groups found in Jamaica are;
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OVERVIEW Each Centre is required to submit the School-Based Assessment of ONE sample of FIVE candidates who are selected from a ranked list as described at B below. It is recommended that ALL subject teachers preparing candidates for the examination collaborate in (i) setting the assignments‚ criteria and mark schemes (ii) standardizing the marking of the assignments. B. INSTRUCTIONS FOR SELECTING THE SAMPLE (i) After the candidates’ SBA scores have been entered electronically‚ the
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Species are related to one another o Species can change through time Natural Selection – process that explains how evolution occurs -> over time‚ it is the transition of genetic material Fitness – the ability of an individual to produce offspring Adaptation o A trait that increases the fitness of an individual o The process of a species acquiring fitness improving traits over time For natural selection to occur these are required: o Variation in traits o Heritable traits (not environmental)
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is very difficult to do so in our society because we reward people who we perceive to be good‚ or to have done good things. If you perform an Altruistic act towards a member of your family would be acting within Hamilton’s kin selection theory (1960s). The kin selection theory which states that you are much more likely to perform an altruistic act if the person you are helping is a member of your family. An example of this is recently in Melbourne there was a wall collapse. Three people died as
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worked on his theory for 20 years. After learning another naturalist Alfred Russel Wallace also had developed similar ideas‚ the two joint and announced the discovery in 1858 by publishing a book called “On the Origin of Species by Means of Natural Selection” The book was extremely controversial because the logical extension of Darwin’s theory was the Homo sapiens were another form of an animal. Darwin was strongly attacked by people‚ especially the church. However his ideas soon gained agreement and
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two stages. First‚ a population becomes geographically separated by a barrier that seperates the initial population into smaller subpopulations. Second‚ as the populations experience different mutations‚ as well as different patterns of natural selection and genetic drift‚ they accumulate genetic differences which end up isolating
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were inferred‚ one for each environment. For the cage uninfluenced by a predator‚ we hypothesized that evolution would occur due to sexual selection‚ and that sexual selection would be in favor of the wild-type drosophila. For the cage containing the predator‚ we hypothesized that the vestigial flies would have a higher relative fitness due to natural selection. A ratio of wild-type to vestigial flies was determined‚ and was set up in each environment. 10 wild-type to 40 vestigial flies was chosen
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critique of what he called ’vulgar sociobiology’ which is a critique of simplistic notions of genes and evolutionary biology. The majority of the book is a critique of what he called ’scientific sociobiology’ and which he basically reduced to ’kin selection’ and what he sees as its failings. He says human kinship is culturally created and about shared interests‚ and is not literal blood dependent. Sahlins believes that human groups make up some close blood kin‚ but also people who are non-relatives
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For animals‚ being able to adapt in nature is a matter of life and death. Through evolution and natural selection‚ animals have acquired behavioral and physical traits called adaptations that enable them to acquire food‚ escape predators and attract mates. The cheetah has the speed necessary to run down its prey‚ monarchs secrete a poison that deters predators from feasting on it and the hummingbird has a very long tongue for extracting nectar from flowers. These are some of the more obvious adaptations
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