13. B
14.meiosis
15. Heredity
16. 6 chromosomes. One chromosome from each pair ends up in one gamete.
17. DNA must undergo replication.
18. The sex cells end up with only two chromosomes each, half the number found in the parent cell. Each sex cell has one chromosomes from each original pair.
You’re welcome:)
A group of Ravens is called unkindness.
Well, as we all know, some people say that Ravens represents sadness and death. And some say it represents freedom.
Answer:
Fertilization? I think this is correct. Sorry if not
Explanation:
Answer:
Artificial selection, also called "selective breeding”, is where humans select for desirable traits in agricultural products or animals, rather than leaving the species to evolve and change gradually without human interference, like in natural selection.
