Question

Which statement about human reproduction is correct?

		Fertilization occurs in the vagina.
		Conception takes place in the vagina.
		oocyte meiosis is completed after fertilization.
		all primary oocytes mature between puberty and menopause.

Answer 1

oocyte meiosis is completed after fertilization is the correct statement about human reproduction.

In meiosis 1,a diploid cell becomes 2 haploid daughter cells ,each chromosome has two chromatids. One cell becomes secondary oocyte the other forms the first polar body .The secondary oocyte then commences meiosis 2 which arrests at metaphase and will not continue without fertilisation.

At fertilization meiosis 2 completes,forming a second polar body. The first polar body may also undergo this process forming a third polar body.