I think the correct answer would be A. The yolk sac becomes the placenta. It is membranous sac that is attached to the embryo. It provides all the nutrition and the blood cells needed by the embryo. It is also called the umbilical vesicle.
Answer: C. Meiosis produces four new cells.
Explanation:
Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
The answer is Gly-Ser-Arg
The pray will dear if so there will be more dear romming than other animal