Cell division

Cards (19)

What do chromosomes carry?
Genetic information
What happens in mitosis?
When a cell divides, each cell produced has the same genetic material
Importance of mitosis
Growth and replacing damaged cells
What can mitosis cause?
Cancer
What does mitosis make?
2 Genetically identical diploid daughter cells
Where does mitosis occur?
In all body cells
What is a tumour?
A group of cancerous cells
What causes cancer?
Chemicals called carcinogens
What do carcinogens do?
Damage DNA, causing mutations
What is an example of ionising radiation?
UV light
What are gametes?
Sex cells- e.g sperm and eggs
What is a zygote?
A fertilised egg cell
How many chromosomes does a gamete have?
23
How many times does a cell divide in mitosis?
Once
How many times does a cell divide in meiosis?
Twice
Where does meiosis occur?
In the testes and ovaries
What does meiosis make?
4 genetically different haploid daughter cells
Do daughter cells in meiosis have a full set of chromosomes?
No- they have half a set (23)
Importance of meiosis
For the formation of gametes in sexual reproduction