B18 Cell Division

Question 1

Mitosis

Answer 1

nuclear division giving rise to genetically identical cells in which the chromosome number is maintained by the exact duplication of chromosomes (the cell makes a copy of each chromosome and divides)

Question 2

Meiosis

Answer 2

reduction division in which the chromosome number is halved from diploid to haploid. Gametes are a result of meiosis (egg and sex cells). The cells produced aren’t all genetically identical. 4 daughter cells produced; each containing half the number of chromosomes of a normal body cell

Question 3

When is mitosis used?

Answer 3

Used to produce normal body cells (e.g when growing or healing) or asexual production

Question 4

When is meiosis used?

Answer 4

Used to produce gametes (egg and sex cells)

Question 5

Reduction division of cells

Answer 5

The 4 new cells made in meiosis all contain half the number of chromosomes as the original cell