Question

If straight hair (S) is dominant over curly hair (s), can two horses with straight hair produce an offspring with curly hair? Explain your answer.

Answer 1

Yes, if both horses are heterozygous (Ss) then they can produce a horse with curly hair. They each carry the recessive allele for curly hair and if they both pass this on to their offspring, it will have curly hair.

Ex with different letters below.
rr would be curly or in this case, ss