Question

genes h, t, and q lie close to each other on the same chromosome, so that independent assortment does not occur. a female has alleles h t q on one chromosome and alleles h t q on the other chromosome. a male is homozygous for h t q. what are possible offspring genotype(s) of these parents? check all that apply.

check all that apply

□ hh tt qq

□ hh tt qq

□ hh tt qq

□ hh tt qq

□ hh tt qq

Explanation:

Step1: Analyze female's gametes

The female has two chromosomes: one with \( H T Q \) and one with \( h t q \). Since the genes are linked (no independent assortment), she can only produce two types of gametes: \( H T Q \) or \( h t q \).

Step2: Analyze male's gametes

The male is homozygous for \( h t q \), so he can only produce gametes with \( h t q \).

Step3: Determine possible offspring genotypes

• When female's gamete \( H T Q \) combines with male's \( h t q \), the offspring genotype is \( Hh Tt Qq \).
• When female's gamete \( h t q \) combines with male's \( h t q \), the offspring genotype is \( hh tt qq \).

The other options (\( Hh tt qq \), \( hh Tt qq \), \( hh tt Qq \)) would require recombination or independent assortment of the linked genes, which does not occur here.

Answer:

A. \( hh tt qq \)
B. \( Hh Tt Qq \)