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Sample Questions Exam 2

Sample Questions Exam 2 - Sample Questions Exam#2 1 A...

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Sample Questions – Exam #2 1. A person who is known to have a particular genotype does not show the phenotype specified by the gene. This is an example of: a) sex reversal. d) phenotype switching b) partial dominance. e) a mutated essential gene. c) incomplete penetrance. 2. How do sex-limited traits compare with sex-influenced traits? a) Differences in hormone expression may affect either sex-limited or sex- influenced traits. b) The genes for sex-limited traits are always located on sex chromosomes while those affecting sex-influenced traits are only found on autosomes. c) Sex-limited traits are only observed in males. d) Two of the above are correct statements. e) None of the above is a correct statement. 3. Assume that genes A and B are 2.6 map units apart. If 200 progeny result from testcrossing a heterozygote to a homozygous recessive individual, how many recombinants would you expect to see?
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