Cell division Flashcards
1
Q
How are chromosomes usually found in body cells?
A
In pairs.
2
Q
How do body cells divide?
A
By mitosis.
3
Q
What do chromosomes contain?
A
Genetic information.
4
Q
What happens when a body fell divides by mitosis? 2
A
- copies of the genetic material are made
* cell divides once to form 2 genetically identical body cells
5
Q
Why does mitosis happen? 2
A
- replace damaged cells
* for growth
6
Q
What do body cells have?
A
2 sets of chromosomes.
7
Q
What do gametes have?
A
1 set of chromosomes.
8
Q
What forms gametes?
A
Cells in reproductive organs divide.
9
Q
What is meiosis?
A
The type of cell division in which a cell divides to form gametes.
10
Q
What happens when a cell divides by meiosis? 2
A
- copies of genetic material made
* cell divides twice to form 4 gametes with a single set of chromosomes
11
Q
What happens when gametes join at fertilisation?
A
A single body cell with new pairs of chromosomes is formed.
