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Question: 1 in the united states there has been substantial mixing...

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1. In the United States, there has been substantial mixing of people with diverse genetic backgrounds due to immigration. In a country where there has been little influx of people for many centuries, would you expect an individual to stand out as unique sooner (fewer traits) or later (more traits) than in our class. Explain.

2. Suppose the breeder decides to breed several litters of brown guinea pigs, but not his black breeding stock. After several generations, the breeder now has three times as many brown guinea pigs as black. Does this mean that brown is now 'dominant'? Why or why not?

3. Explain why mitochondria can be used to trace maternal ancestry, the Y chromosome can trace paternal ancestry, but the autosomal chromosomes cannot.

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