Question

In a breed of cats, black fur is recessive to calico fur. How is it possible that 2 cats with calico fur produce kittens with black fur?

1Both cat parents are heterozygous and passed on a recessive allele to the kittens.

2One cat parent had the recessive allele and passed it on to the kittens.

3Both cat parents are homozygous for their black fur.

4One cat parent had the dominant allele and passed it on to the kittens.

my awnser is one is it right?

Answer 1

1 is correct because since both parents are heterozygous, then they must have the genotypes Bb and Bb. Their offsprings would be BB Bb Bb and bb. bb means one offspring has black fur.

Answer 2

[AI-generated answer — Explain Bot]

Yes, your answer is correct. Option 1 is the correct explanation for how 2 cats with calico fur can produce kittens with black fur. In this scenario, both cat parents are heterozygous, meaning they carry both the dominant allele for calico fur and the recessive allele for black fur. Each parent can pass on either the dominant or recessive allele to their offspring. If both parents pass on the recessive allele for black fur to their kittens, the kittens will inherit two recessive alleles and express the black fur trait.