Flashcards in B2 Biology - Cell division and inheritance Deck (5)
what is mitosis?
a cell division that splits to create identical copies of the original cell
what is meiosis?
cells spilt to form male and female gametes
explain the process of mitosis? ( 5 stages)
1.chromosomes are copied in nucleus (x shaped)
2.chromosomes pulled apart by cell fibres
3.membranes form round both chromosomes, nuclei of two new cells
4.the cytoplasm divides
5.two new cells
how many chromosomes does a human cell hold?
46 chromosomes in 23 pairs