In horses, the Extension gene helps to determine coat color. The dominant trait (E) produces black pigment in the coat. The recessive trait (e) produces red pigment. Would a cross between a stallion who is homozygous, EE, and a mare who is heterozygous, Ee, ever produce a foal with a red coat?(1 point)

Question

Responses

No, because the mare cannot pass on her recessive allele.
No, because the mare cannot pass on her recessive allele.

Yes, because the mare can pass on her recessive allele.
Yes, because the mare can pass on her recessive allele.

Yes, because the stallion's dominant allele and the mare's recessive allele can result in a red coat.
Yes, because the stallion's dominant allele and the mare's recessive allele can result in a red coat.

No, because there would have to be two recessive alleles for the foal to have a red coat.

Answer 1

No, because there would have to be two recessive alleles for the foal to have a red coat.

In this cross, the stallion is homozygous dominant (EE) and can only pass on the dominant E allele. The mare is heterozygous (Ee) and can pass on either the E or the e allele. The possible genotypes for the foal from this cross are EE or Ee. Since red coat color requires the genotype ee (which means the foal must inherit the recessive allele e from both parents), it is not possible for this cross to produce a foal with a red coat.