Biology, asked by tb15722963, 9 months ago

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?

Answers

Answered by MissWolverine
2
  1. Both Bill and Jenny are the carriers of the disease with heterozygous condition (Cc)
  2. the combinations are { CC ,Cc , Cc and cc } so we observe that it is a 25% chance or 1/4 of the total offsprings

Answered by mindfulmaisel
0

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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