1) A mating between a homozygous black rat and a homozygous yellow rat produce a

Question

1) A mating between a homozygous black rat and a homozygous yellow rat produce all gray offspring. When these gray F1 individuals are mated with one another, their offspring consist of rats with the following coat colors: 6 cream, 18n black, 57 gray, 19 yellow.

How many gene pair are interacting to produce the offspring coat coloration pattern seen? How do you know?

What's the genotype to phenotype relationship that produces the rat's coat colors seen?

2) In the clover butterfly, males are always yellow but females can be yellow or white. In females, white is a dominant allele. Two yellow butterflies were crossed to yield an F1 generation consisting of 50% yellow males, 25% yellow females, 25% white females. Describe how this trait is inherited and the genotypes of the butterfly parents.

Explanation / Answer

1. black and yellow are parental, grey is heterozygous and cream is homo recessive. one gene pair of two alleles involved BB=black, YY=yellow, BbYy=grey, bbyy=cream

2.two X alleles produce white where as one Xx or XY produces yellow

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

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