Having white wool (W) is dominant over having black wool (w). A heterozygous parent with white wool is crossed with a homozygous recessive parent with black wool. What is the probability that the offspring will have black wool?

50%.

Explanation:

Heterozygous: Two different alleles.

If the first parent is a heterozygous parent with white wool, their genotype is W(dominant)w(recessive). (Ww)

Homozygous: Two of the same allele.

If the second parent is a recessive parent with black wool, their genotype is w(recessive)w(recessive). (ww)

Put Ww and ww in a punnett square.

The children would have a 50% chance of getting the genotypes Ww and having white wool (dominant).

The children would have a 50% chance of getting the genotypes ww and having black wool (recessive).

Therefore, the probability that the offspring will have black wool is 50%.

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