Answer:
one cell
Explanation:
Oogenesis takes place in the outermost layers of the ovaries, ultimately resulting in the production of one cell.
Phosphate
Because it is the group of the molecules
answer:
that is very cool, and thanks for the points
explanation:
- that's all i had to say :)
Explanation:
In the majority of cases, the extra copy of chromosome 21 comes from the mother in the egg.
In a small percentage (less than 5%) of cases, the extra copy of chromosome 21 comes from the father through the sperm.
In the remaining cases, the error occurs after fertilization, as the embryo grows.
