Question

(HELP QUICKLY PLEASE !!!)

Long hair in Irish Setters is dominant
(L) to short hair (I). A male homozygous
for long hair is crosses with a female
heterozygous for long hair

1.What genotypes and in what proportion could this cross produce ?

2.what phenotypes and in what proportions could this cross produce

Answer 1

The male is LL and the female is Ll.

The possible genotypes of the offspring are: LL and Ll, in a 1:1 ratio.

The phenotype is determined by the genotype, so the possible phenotypes of the offspring are:

Long hair (LL and Ll genotypes) - 100% or 1:1 ratio

No short hair (II genotype) will be produced because the short hair allele is recessive and not present in either parent.

Answer 2

Not really sure the answer for this but I tried, if it’s wrong please let me know in the comment.