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)
Responses
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.
Yes, because the mare can pass on her recessive allele.
Yes, because the mare can pass on her recessive allele.
No, because there would have to be two recessive alleles for the foal to have a red coat.
No, because there would have to be two recessive alleles for the foal to have a red coat.
No, because the mare cannot pass on her recessive allele.
No, because there would have to be two recessive alleles for the foal to have a red coat.
The stallion, with genotype EE, can only pass on an E allele to its offspring. The mare, being Ee, has a 50% chance of passing on either her E allele or her e allele. However, since the stallion can only pass on an E allele, any offspring they produce will always inherit at least one dominant E allele and therefore cannot have a red coat, which requires two copies of the recessive e allele (ee).