What is gene flow?
O
A. When a population splits in two
OB. A mutation becoming more common
O
C. Selection for average traits
O
D. Genes moving between two populations
The answer is d

You're supposed to ask questions, not answer them on your own XD thank you though!

Explanation:

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.