1. which of the following is NOT a reason why we say that human races do not exist on a biological level? . recognizing race leads to social inequalities . our species is very genetically homogenous . because of culture we all share a similar basic environment 2. which of the following skeletal features are common to all primates? . clavicle . bowl-shaped pelvis . high domed forehead 1. How is the location of the vocal tract of homo sapiens different from that of chimpanzees? explain the difference. 2. does the fact that modern Africans have the greatest diversity of all human populations in their mitochondrial DNA support the multiregional hypothesis or African replacement model (RAO)? why?
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Step 1: The reasons why we say that human races do not exist on a biological level are: - Recognizing race leads to social inequalities - Our species is very genetically homogenous - Because of culture, we all share a similar basic environment Step 2: The skeletal Show more…
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Which of the following statements about interbreeding between modern humans and Neanderthals is true? A) The genomes of modern African humans do not contain Neanderthal-derived DNA, indicating that Neanderthals did not interbreed with modern humans after moving out of Africa. B) The genomes of modern African humans do not contain Neanderthal-derived DNA, but 1 - 4% of the genome of non-African humans is derived from Neanderthals, indicating interbreeding. C) The genomes of African humans contain 1- 4% Neanderthal DNA, indicating that Neanderthal speciation occurred after Neanderthals left Africa and that there was no interbreeding with modern humans. D) The genomes of African humans contain 1- 4% Neanderthal DNA, indicating that the ancestor of Neanderthals and modern humans retained an ancient polymorphism. E) There are no differences in comparisons of African and non-African DNA, indicating that Neanderthals were a phenotypically different population of modern humans and should not be considered a separate species.
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Genetic variation within modern humans (Homo sapiens) suggests: 1. Some Neanderthal DNA is found in most non-African peoples. 2. Historically recognized human races represent minimal genetic divergence. 3. All modern humans share a recent (i.e., less than 200,000 years) common ancestry of sub-Saharan African origin. 4. All are correct. 5. Genetic variation shows founder effects as people spread throughout the world. 6. There is more genetic variation within sub-Saharan Africa than elsewhere.
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We reviewed genetic studies showing that non-African human populations are descended from African populations. Some people might conclude from these data that modern African people are in some sense "primitive." What are the logical flaws in this thinking?
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