Brown eye-color alleles are dominant over blue eye-color alleles,which are recessive.Jenna has brown eyes.Her husband,Bill,has blue eyes.Jenna and Bill are the biological parents of James,who has blue eyes.Jenna would be described as ____________ of the allele for blue eyes.

Question

Quizplus · Accepted Answer

Since Jenna has brown eyes but has a child with blue eyes with Bill (who has blue eyes and thus carries two recessive alleles), Jenna must carry one dominant allele for brown eyes and one recessive allele for blue eyes. This makes her a carrier of the allele for blue eyes.

Brown Eye-Color Alleles Are Dominant Over Blue Eye-Color Alleles,which Are