In a partially diploid F′ exconjugant, there are two alleles for lac (1 and 2)and two alleles for his (3 and 4). The phenotype of this cell is identical to a lac 1 his 4 cell. What is the best interpretation?
A)Lac 1 and 2 and his 3 and 4 share only lac 1 and his 4 phenotypes.
B)Lac 1 complements lac 2 and his 3 complements his 4.
C)Lac 1 and his 4 are dominant.
D)Lac 1 and his 4 are wild types.
E)Lac 1 shows its phenotype only if his 4 is also present.

Question

Quizplus · Accepted Answer

Lac 1 and his 4 are dominant because the phenotype of the cell matches that of a lac 1 his 4 cell, indicating that these alleles determine the phenotype.

In a Partially Diploid F′ Exconjugant, There Are Two Alleles