mneosis and fertilsation

Question 1

in what type of organs does meiosis only take place in

Answer 1

reproductive organs

Question 2

explain the stages of meiosis

Answer 2

• all of the chromosomes are copied
• the cell then divides into 2
• both of the cells then divide one more time forming gametes (the chromosomes are now singular)
  MEIOSIS PRODUCES 4 GAMETES FROM ONE CELL WHICH ARE ALL GENETICALLY DIFFERENT

Question 3

explain the process of fertilisation

Answer 3

• in fertilisation, the gamete from the male fuses with the gametes from the female so the chromosomes pair up (the cell now has the normal number of chromosomes 23 pairs)

Question 4

what happens after a normal body cell is formed by fertilisation

Answer 4

the cell will divide by mitosis to form a collection of cells called an embryo as the embryo develops the cell will differentiate forming different cell types