Meiosis

Question 1

Products of meiosis

Answer 1

produces 4 haploid daughter cells (gametes) that are genetically different from each other.

Question 2

Meiosis 1 diagram

Answer 2

see photo

Question 3

Meiosis 2 diagram`

Answer 3

see photo

Question 4

Describe meiosis 1

Answer 4

homologous chromosomes are separated from each other, with one chromosome from each pair going into one of the two daughter cells.

Question 5

Describe meiosis 2

Answer 5

the second meiotic division, the sister chromatids from each chromosome are separated

Question 6

Prophase 1

Answer 6

Chromatin condenses & coils, nuclear envelope breaks down, centrioles move to opposite poles. Crossing over occurs between homologous chromosomes

Question 7

Metaphase 1

Answer 7

Spindle fibres attach to centromeres &chromosomes line at the equator

Question 8

Anaphase 1

Answer 8

Homologous chromosomes move to opposite poles

Question 9

Telophase 1 and cytokinesis

Answer 9

Chromosomes uncoil, nuclear envelope reforms. Animal cells divide by cytokinesis

Question 10

Prophase 2

Answer 10

Chromatin condenses & coils, nuclear envelope breaks down, centrioles move to opposite poles.

Question 11

Metaphase 2

Answer 11

Spindle fibres attach to the centromeres & chromosomes lines up at the equator

Question 12

Anaphase 2

Answer 12

The centromeres divide and the chromatids are pulled to opposite poles

Question 13

Telophase 2 and cytokinesis

Answer 13

Chromosomes uncoil nuclear envelope reforms. Cells divide to form 4 haploid cells.

Question 14

What creates variation in haploid cells

Answer 14

Variation results from independent assortment of chromosomes and crossing over during meiosis 1. Also, random fertilisation of the gametes.