Question

this passage describes the coat graying trait in horses:
your hair may turn gray or white as you grow older. some horses go through a similar process called coat graying as they age. these horses are usually a darker color, such as brown or black, when they are born. over time, the hairs of their coats lose their original color and become gray or white.
in a group of horses, some individuals have coat graying and others do not. in this group, the gene for the coat graying trait has two alleles. the allele for not having a graying coat (g) is recessive to the allele for having a graying coat (g).
this punnett square shows a cross between two horses.

	g	g
g	gg	gg

what is the expected ratio of heterozygous to homozygous dominant to homozygous recessive offspring genotypes? choose the most likely ratio.
2:0:2 2:2:0 0:2:2

Explanation:

Step1: Identify Genotypes

From the Punnett square, the genotypes are \( GG \), \( Gg \), \( GG \), \( Gg \). So we have 2 \( Gg \) (heterozygous), 2 \( GG \) (homozygous dominant), and 0 \( gg \) (homozygous recessive).

Step2: Determine the Ratio

The ratio of heterozygous (\( Gg \)) to homozygous dominant (\( GG \)) to homozygous recessive (\( gg \)) is \( 2:2:0 \).

Answer:

2:2:0