Answer:
It is a hypothesis that explains the origin of evolutionary reversions.
Explanation:
A phylogenetic tree may indicate that genes required for forming anatomical structures such as wings are not completely lost and they are activated many times during the evolution.
The awnser to this question is Absorption
The answer is this: In 2005, 27.99 males out of every 100,000 were diagnosed with melanoma. I did the quiz on Edge.
If by external sex, meaning gender, then yes, because X and X makes a female because that is the female genes but X and Y is the male gene so adding the Y would change the external sex.
