Question

in horses, black (b) is the dominant color, brown (b) is the recessive color. consider the cross seen here, between two black horses (bb). what is the probability that these two horses will have a foal that is brown? a 0% b 25% c 40% d 50%

Explanation:

Step1: Analyze the Punnett square

The Punnett square shows four possible genotypes: \(BB\), \(Bb\), \(Bb\), \(bb\).

Step2: Determine the genotype for brown

Since brown (\(b\)) is recessive, the genotype \(bb\) is needed for a brown foal.

Step3: Calculate the probability

There is 1 \(bb\) out of 4 total genotypes. The probability is \(\frac{1}{4}\).

Answer:

B. 25%