X hits on this document

88 views

0 shares

0 downloads

0 comments

8 / 34

CHAPTER 22: THE REPRODUCTIVE SYSTEMS

F. The (Specific) Stages of Meiosis:

4.Meiosis II:Fig 22.8, page 887.

a.equatorial division;

b.4 stages similar to those of mitosis, with

centromere splitting (between duplicated chromosomes) and

sister chromatids migrating to opposite poles during Anaphase II.

Stages include:

1.Prophase II,

2.Metaphase II,

3.Anaphase II,

4.Telophase II and cytokinesis.

c.Result is 4 gametes with 23 chromosomes.

*During spermatogenesis, 4 sperm result.

*During oogenesis, only 1 ovum results due to unequal cytokinesis (i.e. polar bodies result; discussed later).

G.Comparison of Mitosis and Meiosis: (Keyed on page 30 of this outline)

Event

Mitosis

Meiosis

DNA Replication

Number of Divisions

Number of daughter cells & genetic composition

Importance

Document info
Document views88
Page views88
Page last viewedMon Dec 05 19:13:48 UTC 2016
Pages34
Paragraphs725
Words5435

Comments