230915
Colchicine is an inhibitory chemical, which:
1 prevents the spindle formation in mitosis
2 prevents the formation of equatorial plane
3 stops the functioning of centriole
4 prevents attaching of centromeres with rays
Explanation:
A Colchicine is an inhibitory chemical that prevents the spindle formation in mitosis. Colchicines is used to prevent gout attacks sudden severe pain in one or more joints caused by abnormally high level of a substance called uric acid.
[Haryana PMT-2000]
Cell cycle and Cell Division
230916
Which one of the following is wrong for meiosis?
1 It leads to formation of sister chromatids
2 It occurs in diploid cell
3 It occurs in haploid cell
4 It occurs by splitting of centromeres and separation of sister chromatids
Explanation:
C Meiosis occurs in a diploid organisms, not haploid. Haploid organisms already have a single set of chromosomes, making meiosis unnecessary for their reproduction. Diploid cells reproduce by mitosis making daughter cells that are exact replicas.
230915
Colchicine is an inhibitory chemical, which:
1 prevents the spindle formation in mitosis
2 prevents the formation of equatorial plane
3 stops the functioning of centriole
4 prevents attaching of centromeres with rays
Explanation:
A Colchicine is an inhibitory chemical that prevents the spindle formation in mitosis. Colchicines is used to prevent gout attacks sudden severe pain in one or more joints caused by abnormally high level of a substance called uric acid.
[Haryana PMT-2000]
Cell cycle and Cell Division
230916
Which one of the following is wrong for meiosis?
1 It leads to formation of sister chromatids
2 It occurs in diploid cell
3 It occurs in haploid cell
4 It occurs by splitting of centromeres and separation of sister chromatids
Explanation:
C Meiosis occurs in a diploid organisms, not haploid. Haploid organisms already have a single set of chromosomes, making meiosis unnecessary for their reproduction. Diploid cells reproduce by mitosis making daughter cells that are exact replicas.
