Question

In cats the allele for short hair is dominant over the allele for long hair. A short haired male and long haired female have kittens. Eight kittens have short hair and 3 have long hair. A) What are genotypes of the parents? B) What is the expected ratio of short to long haired cats? C) What Is the actual ratio in this problem?

Answer 1

The short-haired male has the genotype SS, and the long-haired female has the genotype ss. The expected ratio of short to long-haired cats is 100% short-haired cats. The actual ratio in this problem is 8 short-haired cats to 3 long-haired cats.

Step-by-step explanation:

A) The genotype of the short-haired male can be represented as SS, while the genotype of the long-haired female can be represented as ss.

B) The expected ratio of short to long-haired cats can be determined using a Punnett square. When crossing an SS male with an ss female, all the offspring will have the genotype Ss, resulting in a 100% ratio of short-haired cats.

C) The actual ratio in this problem is 8 short-haired cats to 3 long-haired cats, resulting in a ratio of 8:3.

Answer 2

Genotype of parents: Ss x ss

Genotype of offsprings: Ss ss

Expected ratio of short to long: 2 : 2 = 1 : 1

The actual ratio in this problem is Eight kittens have short hair and 3 have long hair: 8 : 3

Step-by-step explanation:

In cats the allele for short hair is dominant over the allele for long hair. (SS or Ss for short hair; ss for long hair).

A short haired male and long haired female have kittens. Eight kittens have short hair and 3 have long hair.

For the parents to have been able to produce long haired offsprings, it means both parents possess one copy each of the recessive traits. Thus we have

Phenotype of parent: A short haired male and long haired female

Genotype of parents: Ss x ss

Genotype of offsprings: Ss ss

Expected ratio of short to long: 2 : 2 = 1 : 1

The actual ratio in this problem is Eight kittens have short hair and 3 have long hair: 8 : 3