We looked at how genes can be dominant ( strong ) and recessive ( weak).

To show recessive genes you need to have two copies – one from your mum and one from dad.

Link to GCSE bitesize ( this work is at level 7 at ks3)

Examples of genes that are recessive are blue eyes, blond hair, non tonge rolling and cystic fibrosis.

Homework – complete the sheet ( double trouble ) for next thursday. 9aa4.doc