Question

A gamete affected by non-disjunction would have ______.

Options

• the potential for a genetic disorder

• one extra or one missing chromosome

• a change from the normal chromosome number

• all of the above

Answer 1

A gamete affected by non-disjunction would have the potential for a genetic disorder, one extra or one missing chromosome and a change from the normal chromosome number.

Explanation:

A gamete affected by non-disjunction has chromosomes that did not separate properly during meiosis. This results in the gamete having either one extra chromosome or one missing chromosome, leading to a change in the normal chromosome number. Such abnormalities in chromosome number can cause genetic disorders, for example, Down’s syndrome (trisomy 21), Klinefelter’s syndrome (XXY), or Turner’s syndrome (XO). Thus, a gamete affected by non-disjunction has the potential for a genetic disorder, an abnormal number of chromosomes, and a deviation from the normal chromosome count.