If both parents must have a point mutation in their CF genes in order to create

Question

If both parents must have a point mutation in their CF genes in order to create a child with CF, how common do you think the disease is in the population? Explain.Why do you think another mistake doesn't just "correct" the mutation in an abnormal CF gene? What do you think the chances of this occurring would be? Compare this likelihood to the chance of some other event happening.What other diseases are thought to be caused by point mutations? What do point mutations do in those diseases?If you discovered through genetic testing that your best friend’s child had CF, what advice would you give your friend about treatments? What about resources your friend might find useful?Using what you know about point mutations and their potential effects, explain why it might be extremely risky for pregnant women to expose themselves to mutagens (things that cause mutations) during pregnancy. How can we determine a safe level of exposure?
CF genes-casued --------by recessive gene --------------cystic fibrosis
in the population, it is carried by heterozygous condition

Explanation / Answer

CF is an autosomal recessive gene, meaning that both parents must pass on the mutated gene for it to be present. If one parent passes on a good gene and the other passes a bad one, the person will only be a carrier of the gene and the disease will not show up. If both parents are heterozygous with the CF gene, they have a 1 in 4 chance of having a baby with cystic fibrosis. As it stands, 1 out of 30,000 people have cystic fibrosis, making it one of the more common genetic defects.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.