The answer is b, for he is comparing the two rocks to find an age relative to the other
Answer:
The “silencing” of a gene Due to the additon/substitution in an atom of a methyl group
Explanation:
Answer:
embryonic
Explanation:
after 8 weeks, the fetus formed from the fertilization of the ovum by the sperm, a thin amniotic sac is formed round it, in which the fetus is connected to the mother via the abdominal cord.