Because the share the characteristic from there parent's
ANSWER:I think the answer is number 3
The sickle form of the hemoglobin gene is created when an adenine nucleotide is changed to a thymine. ... That single amino acid replacement in the -globin protein alters the shape and the chemistry of the hemoglobin molecule, causing it to polymerize and distort the red blood cell into the sickle shape.
Answer: when their is a new moon
Explanation:
The answer is D because this would help them to survive and is equal to natural selection
