Page 20 - Science E-Book Prep.3 2024-2025 1st term_Neat unit 3,4

Science Department
Prep.3

Anaphase I:

1. The spindle fibers shrink, so every two
homologous chromosomes move away
from each other.

2. One of the two chromosomes migrates
towards the cell pole and the other migrates
towards the other pole.
3. Each pole of the cell contains half the number of

chromosomes of the parent cell.

Telophase I:

1. The spindle fibers disappear.

2. A nuclear membrane is formed at the
poles of the cell, leading to the formation
of two nuclei.
3. Each cell contains half the number of
the original chromosomes.

Second meiotic division:
- It aims to increase the number of the produced cells from the first
meiotic division.
- At the end it produces 4 cells of half the number of chromosomes
(haploid).

61

First Term