DNA Mutations

Question 1

Cystic fibrosis is genetic, meaning it can be passed from parent to child. What type of mutation causes cystic fibrosis?

Revolt · Accepted Answer

germline mutation

Question 2

If both parents are carriers of the defective CF gene, what is the chance that their child will have cystic fibrosis?

Revolt · Accepted Answer

25%

Question 3

List four symptoms associated with cystic fibrosis.

Revolt · Accepted Answer

Four symptoms associated with cystic fibrosis include salty-tasting skin, persistent coughing (often with phlegm), frequent lung infections, and poor growth or weight gain despite a good appetite.

Question 4

What type of UV light is used in tanning beds, and why is it so dangerous?

Revolt · Accepted Answer

Tanning beds primarily use UVA radiation, along with some UVB radiation. They are dangerous because this UV light penetrates the skin and damages the DNA in skin cells, which increases the risk of developing skin cancer (such as melanoma) and causes premature skin aging, including wrinkles and sunspots.

Question 5

What information did you include in your response?

Revolt · Accepted Answer

salty-tasting skin; persistent coughing; phlegm; frequent lung infections; wheezing or shortness of breath; poor growth and/or weight gain; difficulty in bowel movements; nasal polyps

Question 6

What information did you include in your response?

Revolt · Accepted Answer

UVA light is dangerous because it penetrates multiple layers of the skin.; Some tanning beds also emit UVB light.

DNA Mutations Answers

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