Meiosis

Question 1

What is meiosis

Answer 1

2 stages of cell division that creates genetically diverse haploid gametes

Question 2

Where does meiosis take place

Answer 2

In the gonads in specialized germ cells

Question 3

What are germ cells

Answer 3

Cells that give rise to gametes in sexually reproducing organisms

Question 4

What are the gonads and what do the make

Answer 4

The ovaries in females and testes in males. The female gonads make gametes called eggs and the male gonads make gametes called sperm

Question 5

What type of cells are gametes made to be and why

Answer 5

They are made to be haploid cells and it is because if the chromosome number in each gamete isn’t reduced, the zygote created will have double the amount of chromosomes

Question 6

What is genetic recombination

Answer 6

Gametes will have different combinations of genes due to the independent assortment of chromosomes and crossing over, which leads to genetic variation

Question 7

What is the independent assortment of chromosomes

Answer 7

Homologous chromosomes randomly lining up on the metaphase plate

Question 8

How many cell divisions are involved in meiosis

Answer 8

Two cell divisions (meiosis 1 and meiosis 2)

Question 9

What is the number of chromosomes in daughter cells after meiosis

Answer 9

The number in daughter cells is half of the parent cells (23)

Question 10

What are all the stages of meiosis

Answer 10

Meiosis 1
- prophase 1
- metaphase 1
- anaphase 1
- telophase 1
- cytokinesis 1

Meiosis 2

• prophase 2
• metaphase 2
• anaphase 2
• telophase 2
• cytokinesis 2

Question 11

What causes genetic variation?

Answer 11

Crossing over and the independent assortment of homologous chromosomes since they create different combinations of chromosomes

Question 12

How does crossing over work?

Answer 12

Non sister chromatids will intertwine then break, reattach to each other and exchange sections of genetic material while doing so