Its mutton, because the sheep is at least 2 years old, thus the butcher is correct, come on chef. if youve been cooking for long long then how would you not know it isnt mutton by now?
Answer:
Heterozygous alleles are alleles that are not identical, for example, we have an eye color allele called Bb, which is equal to brown. This is a dominant allele that is heterozygous because it has one recessive(b) allele and a dominant(B) allele.