Cell division, growth and differentiation Flashcards
1
Q
explain the stages of mitosis
A
- a body cell copies all its chromosomes
- the cell divides to form 2 identical daughter cells
2
Q
what is differentiation
A
when unspecialised cells become more specialised to carry out a particular function
3
Q
what is a
chromosome
gene
A
a long thread of DNA thats made up of genes, its found in pairs
short lengths of DNA that code for characteristics
4
Q
explain the steps on meiosis
A
- the chromosomes in the gametes make copies of each other
- similar chromosomes pair up
- sections of DNA are swapped
- the cell divides twice producing 4 cells with 23 chromosomes each
5
Q
what is a stem cell
A
an undifferentiated cell, they can differentiate to form any type of cell
