Bill and Jenny have three children. One of their children has cystic fibrosis, which is a recessive disorder (cc). Neither of the parents has the disorder.
Part A: Explain how it is genetically possible that one of their children has cystic fibrosis.
Part B: What are the odds that each child produced by Bill and Jenny could have cystic fibrosis?
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- Both Bill and Jenny are the carriers of the disease with heterozygous condition (Cc)
- the combinations are { CC ,Cc , Cc and cc } so we observe that it is a 25% chance or 1/4 of the total offsprings
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The odds that in children produced by Billy and Jenny could have cystic fibrosis is is 25% according to probability.
Explanation:
- Since cystic fibrosis is a genetically controlled disease and it is recessive hence one of the children of Jenny and Bill, it signifies that both the parents are Carriers of the disease.
- if we draw a unit square we can observe that if a couple has four children only one will have cystic fibrosis.
- This is because if a recessive trend is present in career state in both the parents then only one of the four will have the gene which is necessary for producing the disease
- Two of the children which are produced by the couple will be the Carriers of the disease.
To know more about cystic fibrosis,
What is cystic fibrosis?
https://brainly.in/question/359738
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