Super confused. Please help me! Question 3 DNA is taken from 3 brothers. Larry h

Question

Super confused. Please help me!

Question 3

DNA is taken from 3 brothers. Larry has cystic fibrosis (CF), Curly is a carrier of CF, and Moe is neither a carrier nor affected by CF. When we cut DNA from each of them with the restriction enzyme, StuI:

Larry's DNA doesn't cut at all (creates one 10kb band on a gel)

Curly's DNA creates three bands (10kb, 7kb, and 3kb)

Moe's DNA creates two bands (7kb and 3kb)

What can we say about the mutation that causes CF in this family?

A.) The mutation that causes CF disrupted/removed a restriction enzyme site that was normally present in the gene.

B.) The mutation that causes CF created a new restriction enzyme site in this gene.

C.) The mutation that causes CF did not change any StuI restriction enzyme sites in this gene.

D.) None of the above are true.

A.) The mutation that causes CF disrupted/removed a restriction enzyme site that was normally present in the gene.

B.) The mutation that causes CF created a new restriction enzyme site in this gene.

C.) The mutation that causes CF did not change any StuI restriction enzyme sites in this gene.

D.) None of the above are true.

Explanation / Answer

My idea is D

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