The answer your looking for is B different patterns of gene expression
The coronary arteries supply oxygen to The heart muscle
Answer:
Changes in DNA caused by mutation in a coding region of DNA can cause errors in protein sequence that may result in partially or completely non-functional proteins. Each cell, in order to function correctly, depends on thousands of proteins to function in the right places at the right times.
Explanation:
hope this helps
Answer:
In order for pregnancy to happen, sperm needs to meet up with an egg.