A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor
Answer:
I think that the answer would be D
Answer:
They are know as heterozygous alleles.
Explanation:
Two IDENTICAL alleles are known as homozygous<em> </em>alleles.
I hope this helps you understand the difference, and as always, I am joyous to assist anyone at any time.
