3. You inherit 100 bristly hamsters from an eccentric aunt. All the hamsters hav
ID: 187085 • Letter: 3
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.