NEET Biology Cell Cycle And Cell Division Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Cell Cycle And Cell Division Topic Based

Question & Answer Discuss:

Colchicine is an inhibitory chemical, which

(a) prevents attaching of centromeres with rays

(b) prevents the spindle formation in mitosis

(c) stops the functioning of centriole

(d) prevents the formation of equatorial plane.

Answer: (b)

Colchicine is an alkaloid derived from the autumn crocus, Colchicum autumnale. It inhibits spindle formation in cells during mitosis so that chromosomes cannot separate during anaphase, thus inducing multiple sets of chromosomes. Colchicine is used in genetics, cytology, and plant breeding research and also in cancer therapy to inhibit cell division.

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