Multiple choice

Which of the following statements is CORRECT of sex chromosome abnormalities in humans?

  1. They typically have benign effects and rarely are lethal.

  2. They have severe effects and are lethal.

  3. They do not depend upon gender.

  4. They cannot be diagnosed before birth of an organism.
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A Correct answer
Explanation

Because sex chromosome abnormalities rarely result in an early death and their symptoms are often not severe, comparatively large number of people with these abnormalities survive to old age.

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