A constriction or gap at particular locations on a chromosome that is prone to breakage under certain conditions is called:
A)chromosome inversion.
B)fragile site.
C)copy-number variation.
D)nondisjunction.
E)aneuploidy.

Question

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A fragile site is a specific location on a chromosome that is prone to breaking or gap formation under certain conditions such as exposure to chemicals or radiation. This can result in an increased risk of genetic abnormalities or diseases. Chromosome inversions involve the rearrangement of genetic material within a chromosome, copy-number variation refers to differences in the number of copies of specific DNA sequences between individuals, and nondisjunction and aneuploidy involve errors in the distribution of chromosomes during cell division.

A Constriction or Gap at Particular Locations on a Chromosome