GCSE Biology – Cystic fibrosis

Last updated: 14/06/2020
WJEC GCSE Science – Double science higher DNA and inheritance GCSE Biology – Cystic fibrosis

Learning Objectives

-I can describe the phenotype and genotype of a person with cystic fibrosis

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  3. Answered

  1. What does recessive allele mean?

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  2. What does dominant allele mean?

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  3. What does carrier mean?

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  4. What type of condition is cystic fibrosis?

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  5. What does cystic fibrosis affect?

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  6. What is cystic fibrosis caused by?

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  7. What does cystic fibrosis cause?

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  8. What can cystic fibrosis cause?

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  9. Do both parents need to have cystic fibrosis for the child to have it?

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  10. How many parents must have the cystic fibrosis allele for the offspring to have it?

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  11. Why must both parents have the cystic fibrosis allele for the child to have it?

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  12. Why can offspring have cystic fibrosis without the parents having it?

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  13. Why can parents carry the cystic fibrosis allele without having cystic fibrosis?

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  14. If both parents are carriers, what is the chance of the child having cystic fibrosis?

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  15. If one parent is a carrier and the other has cystic fibrosis, what is the chance of the child having cystic fibrosis?

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  16. If one parent has cystic fibrosis and the other has no cystic fibrosis allele, what is the chance of the child having cystic fibrosis?

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