Cell Division Flashcards
1
Q
How many chromosomes in each cell
A
46 chromosomes
23 pairs
2
Q
How many chromosomes do the sperm and egg have
A
23 each but when they join together it makes the full 46
3
Q
Why is cell division necessary
A
To grow
For repair and damage
To replace worn out cells
4
Q
What must cells have to divide
A
The same genetic material as the original so they can do the same job
5
Q
What is a chromosome
A
ONE long molecule of DNA
6
Q
What is a gene
A
A section of a chromosome (there are hundreds in one chromosome)
7
Q
What is DNA
A
Deoxyribonucleic acid
Each gene codes for a sequence of amino acids to make protein
