Inheritance - meiosis and fetilisation

Question 1

what does meiosis only take place in?

Answer 1

reproductive organs. in humans this is the testes in males and ovaries in females

Question 2

what are the stages of meiosis?

Answer 2

1. all of the chromosomes are copied (chromosomes in pairs)
2. cell divided into two
3. both of these cells decide one more time forming gametes (chromosomes single)

Question 3

how many chromosomes does meiosis produce?

Answer 3

half the amount it started with

Question 4

what does meiosis produce from original cell?

Answer 4

4 gametes which are all genetically different and have different alleles

Question 5

what happens to the gametes?

Answer 5

join together in fertilisation where the cell now has normal number of chromosomes

Question 6

what happens after fertilisation?

Answer 6

new cell divides by mitosis creating a clump of identical cells. scientists call this an embryo. as embryo develops, cells differentiate forming different cell types.in animals these include nerve and muscle cells.