Explain why parents, who do not have cystic fibrosis, can have a child with cystic fibrosis.

Because cytic fibrosis is a recessive genetic disease, both parents can be carriers therefore having Ff genotypes. If a punnett square is drawn, it can be seen that offspring with the genotypes FF, Ff and ff can be produced, meaning that an affected child can be born. 

Answered by Sama A. Biology tutor

2536 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

What is osmosis?


What is the difference between a gene, a chromosome and DNA?


Describe how a change in temperature affects enzyme activity.


What are the issues of monocropping in agriculture and how could inputting hedgerows improve this?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences