Question

which of these is a possible consequence of nondisjunction? extra or missing chromosomes in gametes. a chromosome segment attaching somewhere else. a flipped segment of a chromosome. duplication of a chromosome segment.

Explanation:

Nondisjunction is an error in cell - division where chromosomes fail to separate properly. This can lead to gametes having an abnormal number of chromosomes, either extra or missing. The other options describe different types of chromosomal mutations like translocation (chromosome segment attaching elsewhere), inversion (flipped segment of a chromosome), and duplication (duplication of a chromosome segment), which are not consequences of nondisjunction.

Answer:

Extra or missing chromosomes in gametes.