Complete each sentence using the words and phrases on the left. (Not all words o

Question

Complete each sentence using the words and phrases on the left. (Not all words or phrases are used). meiosis I in the ovaries undergo division to Oogenesis begins when the diploid form many undergo mitosis polar body chiasmata diplotene menopause disintegrate , primary oocytes oogonia ovum Primary oocytes are the cells that undergo become arrested in the has occurred and nonsister chromatids are still connecting at In human females, these cells when crossing-over substage of After a woman reaches puberty, one primary oocyte completes meiosis l each month; this division produces a large which often does not divide further and a much smaller During meiosis II, the secondary oocyte undergoes another division, giving rise to the and another polar body In humans, the ovum contains 22 autosomes and one sex chromosome for a total of 23 chromosomes, which is the number. The polar bodies disintegrate. Therefore, n humans each complete meiosis asymmetrical prophaseI secondary oocyte metaphase l haploid a single haploid cell At , the monthly cycle ceases, and the remaining primary ooctyes Reset

Explanation / Answer

OOgenesis begins when diploid oogonia in the ovaries undergo division to form many primary oocytes.

Primary oocytes are the cells that undergo Meosis I. In human females, these cells become arrested in

the diplotene stage of prophase I substage of meiosis I. When crossing over has occurres and nonsister

chromatids are still connecting at chaismata.

After woman reaches puberty, one primary oocyte completes meisosis I each month, this division produces

a large secondary oocyte and a much smaller polar body which does not divide furthur.

In humans, the ovum contains 22 autosomes and one sex chromosome for a total of 23 chromosomes, which is the

assymetrical number. The polar bodies disintegrate. Therfore in humans each complete meiosis produces a single

haploid cell.

At menopause, the monthly cycle ceases and the remaining primary oocytes disintegrate

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