A wild-type strain of haploid yeast is crossed to a mutant strain with phenotype d.What phenotypic ratios will be observed in the progeny?
A)all wild type
B)75% wild type and 25% mutant (d)
C)50% wild type and 50% mutant (d)
D)25% wild type and 75% mutant (d)
E)all mutant (d)

Question

Quizplus · Accepted Answer

In a cross between a wild-type strain and a mutant strain of haploid yeast, the progeny will exhibit a 1:1 ratio of wild type to mutant phenotypes because each parent contributes one allele to the offspring, resulting in half of the progeny receiving the wild-type allele and the other half receiving the mutant allele.

A Wild-Type Strain of Haploid Yeast Is Crossed to a Mutant