3. You inherit 100 bristly hamsters from an eccentric aunt. All the hamsters hav

Question

3. You inherit 100 bristly hamsters from an eccentric aunt. All the hamsters have the same ents, and these are all the known offspring of the parental pair. If a single gene is responsible or the bristly coat trait, which of the following cannot represent the genotypes of the parent hamsters? a) b/b x b/b b) B/b x B/b c) B/B x B/b d) B/B x b/b e) any of the above pairs could represent the parental genotypes 4. Which of the following statements is not true? a) If a phenotype is due to a dominant allele, affected offspring always have affected parents b) If a phenotype is due to a recessive allele, affected offspring may not have affected parents. c) If you make a cross between homozygous parents with different phenotypes, and all the offspring have the phenotype of one parent, then that trait is dominant. If a single copy of the wild type allele is sufficient to produce a functional phenotype, then the gene is haploinsufficient. The "wild type" allele may produce a dominant or a recessive phenotype.

Explanation / Answer

1) b/b x b/b - cannot represent the genotype of the parent hamsters because only when the bristly coat trait is dominant represented by B, all 100 hamsters will express the trait.

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