Mitosis Flashcards
1
Q
First step
A
DNA replicates to form x-shaped chromosomes, subcellular structure divide, the cell grow bigger
2
Q
2nd step
A
Nucleus disappears. The chromosome line up at the centre of the cell
3
Q
3rd step
A
Cell fibre pulls the 2 identical arms of each chromosomes apart and towards opposite pole of the cell
4
Q
4th step
A
A new nucleus forms around each set of chromosomes
5
Q
5th step
A
Cytoplasm divides forming two identical daughter cells
6
Q
DNA definition
A
Molecule with a double helix shape
7
Q
Gene definition
A
Codes for characteristics
8
Q
Chromosome definition
A
Strips of tightly coiled DNA, humans have 23 pairs
9
Q
Why would the length of a cell vary in different tissues
A
Different replacement rates
