Sample Response: No, the offspring of two chestnut horses cannot have black hair. Since the chestnut allele is recessive, both parents have to be homozygous recessive (aa) and so do not carry the dominant black hair allele. The only allele the parents can pass to their offspring is the chestnut allele. What did you include in your response? Check all that apply.No, the offspring cannot have black hair.Both parents must be homozygous recessive and so do not carry the dominant black hair allele.Bo