How do you do Part A, Part B, AND Part C?? In rats, gene B produces black coat c

Question

How do you do Part A, Part B, AND Part C??

In rats, gene B produces black coat color if the genotype is B-, but black pigment is not produced if the genotype is bb. At an independent locus, gene D produces yellow pigment if the genotype is D-, but no pigment is produced when the genotype is dd. Production of both pigments results in brown coat color. If neither pigment is produced, coat color is cream. Determine the genotypes of parents of litters with the following phenotype distributions. Part A 9 black. 9 cream Enter your answers separated by a comma. For example, for BBDD, enter BBDD, . Part B 9 brown, 3 black, 3 yellow, 1 cream Enter your answers separated by a comma. For example, for BBDD, enter BBDD, . Part C 12 brown, 4 black At the B locus, one parent was BB and the other parent could have had any genotype (BB, Bb, or bb). At the D locus, both parents were Dd. At the B locus, one parent was BB and the other parent could have had any genotype (BB. Bb, or bb). At the D locus, one parent was and the other was dd. At the B locus, both parents were BB. At the D locus, both parents were Dd. At the B locus, both parents were BB. At the D locus, both parents were Dd and the other was dd.

Explanation / Answer

Part A. The genotypes of the parent is Bbdd X bdbd

Part B: The genotype of the parent is BbDd X BbDd

Part C: The genotype of the parent is BBDd X BbDd

The answer is the first option: At the B locus, one parent was BB and the other parent could have had any genotype (BB, Bb or bb). At D locus both parents were Dd.

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.