Meiosis

Question 1

What are the reproductive cells called?

Answer 1

Gametes

Question 2

In animals what are the male and female gametes?

Answer 2

The male is the sperm cell and the female is the ovum.

Question 3

In flowering plants what are the male and female gametes?

Answer 3

The male gamete is a cell in the pollen grain and the female gamete is an egg cell in the ovule.

Question 4

What is the resulting cell of the male and female gametes?

Answer 4

Zygote.

Question 5

What is meiosis?

Answer 5

A process of cell division where the number of chromosomes is halved so the zygote ends up with the same number of chromosomes as it parents.

Question 6

What is the diploid number?

Answer 6

The number of chromosome in the body cells.

Question 7

What is the haploid number?

Answer 7

The number of chromosomes in the gametes. (Half the diploid number.)

Question 8

How many cells are in the diploid number?

Answer 8

46.

Question 9

Steps for meiosis

Answer 9

Homologous chromosomes come to lie closely alongside each other and behave like a single chromosome.

2. Nuclear membrane disappears. A spindle forms. Chromosomes are separated. The cell starts to constrict.
3. One long and one short chromosome go the either end of the cell. Cell contains only 2 chromosomes. Chromatids become clear.
4. 2 new spindles form at right angles of original spindle. Chromatids separate and pass to opposite ends. The cell constricts at right angles to the first constriction.
5. Cell division is completed forming 4 gametes.