Cell Division- how are new cells made

 How are new cells made?

Cells divide when the body needs to:

1.  repair 

2. grow

3. replace 

Diploid

• All body calls except gamates are diploid.
• Each cell has 46 cromosomes / 23 pairs of chromosomes (one from each parent)
• This is also called a  full set of cromosomes.

Haploid

• Haploid applies to Gametes / sex  cell e.g. Sperm cells and egg cells
• Each cell has 23 chromosones only
• Half the number compared to a diploid cell

Key words

• GENE: A short section of a DNA which controls characteristics
• CHROMOSOME: A long strand of coiled up DNA
• NUCLEUS: Where genetic…