Question

20. Which of the following statements regarding human genetic disorders is accurate? A. Nondisjunction is responsible for causing Huntington's disease. B. Disorders in individual genes can cause disease or provide individuals with a genetic advantage. C. Disorders in individual genes are responsible for Down's syndrome. D. Nondisjunction can lead to an incorrect number of sex chromosomes.

Answer 1

Hello There!

The correct answer is B. Disorders in individual genes can cause disease or provide individuals with a genetic advantage.

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Answer 2

The correct option is B.
An alteration in an individual's gene may either be beneficial or detrimental. If the alteration in the gene sequence confers a genetic advantage on the individual then the alteration is beneficial but it the alteration confers a genetic disadvantage on the individual, then the alteration is detrimental.