Meiosis and Mitosis

Question 1

What is the purpose of Meiosis?

Answer 1

To produce haploid cells/gametes (ova and sperm) in the ovum/testes

Question 2

What stages does meiosis involve?

Answer 2

IMPATPAT

Question 3

What are some differences in the process of meiosis and mitosis?

Answer 3

1) In metaphase I sister chromatid pairs line up along the equator
2) In anaphase I sister chromatid pairs separate
3) Telophase I creates different haploid cells whilst telophase creates identical diploid cells
4) Telophase II creates 4 different cells (gametes)

Question 4

When are chromosomes single of double stranded during meiosis?

Answer 4

Chromosomes are still double stranded after telophase I but single stranded after telophase II.

Question 5

What is the purpose of mitosis (in multi and unicellular organisms)?

Answer 5

Cell division of a diploid parent to produce two identical diploid daughter cells.
1) Growth and repair in multicellular organisms
2) Asexual reproduction in unicellular organisms

Question 6

Why does mitosis occur in a zygote?

Answer 6

To grow into an embryo

Question 7

What is a zygote?

Answer 7

The combination of a sperm and ovum (which fertilize).

Question 8

What are types of asexual reproduction?

Answer 8

Binary fission, budding, fragmentation, runners, and propagation.

Question 9

Describe the types of asexual reproduction?

Answer 9

1) Binary fission: basic replication
2) Budding: bud or outgrowth on original organism because of cell division at a particular site resulting in the development of a new organism
3) Runners: a stem running along the ground that develops into a new organism at the node
4) Fragmentation: organisms split and fragments develop into new organisms
5) Propagation: part of an organism is removed and planted to it regenerates into a new organism