Cystic fibrosis is a genetic disorder caused by recessive alleles. Complete a Punnet square to show the inheritance of cystic fibrosis when both parents are carriers. State the probability of that a child born to these parents will have cystic fibrosis.

Punnet Square: to be shown on whiteboard. Percentage probability of inheritance: 25%

JR

Related Biology GCSE answers

All answers ▸

How is the circulatory system is adapted to give oxygen to the tissues and remove waste products?


What happens prior to and during mitosis?


What are the functions of the substances in the blood?


Of what smaller molecules are carbohydrates made of and what is their main function in the body?