BIOLOGY 101 Lecture 2: 8.26.16 part three

In a mythical beast Godzailla bigfootus, coat color is under thecontrol of a single gene, C, with two codominant alleles, C^B andC^Y. Heterozygotes are green while homozygotes are either blue (C^BC^B) or yellow (C^Y C^Y). An independently assorting gene I,segregates two alleles: I (color) is completely dominant to i(color inhibition. Two individuals that are both C^B C^Y Ii mate.What are the genotypic and phenotypic ratios expected in theiroffspring? Please give an explanation. Would like to understandconcept to study.

I+ P- O^C Z+ Y+/ I- P+ O+ Z- Y-

For each of the following genotypes, indicate whether theproduction of normal b-galactosidase will beconstitutive, inducible, ornoninducible (absent). Briefly explain the reasonfor each answer.

(A) I⁺p⁺o⁺Z ⁺Y⁺A ⁺

(B) I^-p⁺o⁺Z⁺Y⁺A ⁺

(C)I⁺p⁺o^cZ^-Y⁺A⁺

(D) I⁺p⁺o⁺Z ^-Y⁺A⁺