5 - Chromosomes And Mitosis Flashcards
What do chromosomes do
They contain genetic information
Where are chromosomes in the body
They are in the nucleus of a cell
What do chromosomes look like
They look like coiled up lengths of DNA molecules
What does each chromosome carry
Each chromosome carries a large number of genes - different genes control the development of different characteristics - such as hair colour
How many pairs of chromosomes are there
There are 23 pairs of chromosomes - 46 in total
What is the cell cycle
When body cells in multicellular organisms divide to produce new cells as part of a series of stages called the cell cycle
What is mitosis
Mitosis is the stage of the cell cycle when the cell divides
What do multicellular organisms use mitosis for
They use mitosis to grow or replace cells that have been damaged
