Question

1. a man whose mother had a genetic disease due to a mutation in gene x wants to know if he will also get the disease. results from his genetic test show that there is a mutation in the dna next to gene x, as shown in the illustration. based on this information alone, which prediction can be made? a. he will not have any diseases. b. he will probably be a genetic carrier of the disease. c. he will most likely have the disease. d. he will not likely have the disease.

Explanation:

The mutation is in DNA adjacent to gene X, not in gene X itself (the gene linked to the mother's disease). Without a mutation in gene X, he does not have the variant that causes the disease. Option A is incorrect because it incorrectly claims he will have no diseases at all, not just this specific genetic disease. Option B is incorrect because a carrier has a mutation in the disease-causing gene, which he does not. Option C is incorrect because the disease-causing gene X is unmutated.

Answer:

D. He will not likely have the disease.