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 anindependent locus, gene D produces yellow pigment if the genotypeis D–, but no pigment is produced when the genotype is dd.Production of both pigments results in brown coat color. If neitherpigment is produced, coat color is cream. Determine the genotypesof parents of litters with the following phenotypedistributions. | Part A 4 brown, 4 black, 4 yellow, 4 cream Enter your answers separated by a comma. For example, forBBDD, BbDd enter BBDD,BbDd. SubmitRequest Answer Part B 3 brown, 3 yellow, 1 black, 1 cream Enter your answers separated by a comma. For example, forBBDD, BbDd enter BBDD,BbDd. SubmitRequest Answer Part C 12 brown, 4 black 12 brown, 4 black| At the B locus, both parents were BB. At the D locus, oneparent was Dd and the other was dd. | | At the B locus, both parents were BB. At the D locus, bothparents were Dd. | | At the B locus, one parent was BB and the other parent couldhave had any genotype (BB, Bb, or bb). At the D locus, one parentwas Dd and the other was dd. | | At the B locus, one parent was BB and the other parent couldhave had any genotype (BB, Bb, or bb). At the D locus, both parentswere Dd. |
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