Answer:
Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Explanation:
Answer: the cells differentiate
Ok, I'm not fully sure but answer B sound right, so I think it's right
The lining of the uterus, and the fallopian tube.