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In dogs, the gene for fur color has two alleles. The dominant allele (F) codes for grey fur and the recessive allele (f) codes for black fur. The female dog is heterozygous. The male dog is homozygous recessive. How many puppies are grey?

In dogs, the gene for fur color has two alleles. The dominant allele (F) codes for grey fur and the recessive allele (f) codes for black fur. The female dog is black. The male dog is black. What could their genotypes be?

In dogs, the gene for fur color has two alleles. The dominant allele (F) codes for grey fur and the recessive allele (f) codes for black fur. The female dog is heterozygous. The male dog is heterozygous. How many puppies are grey?

In fruit flies, red eyes are dominant (E). White-eyes are recessive (e). A female fly has white eyes, and the male fly is homozygous dominant for red eyes. What must the females genotype be?

Rr x rr What are the genotypes of the offspring?

What is a dominant trait?

Recessive

The letters that represent the different forms of a gene (d=Dimples)

Phenotype

Combination of alleles (letters) DD, Dd,dd

Two alleles/letters for one trait that are different

Two alleles/letters for one trait that are the same (DD, dd)

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