A: During anaphase-II,chromatids of a chromos | vedclass

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(A) In meiosis-$II$,the sister chromatids separate during anaphase-$II$ due to the splitting of the centromere. Similarly,in mitosis,the centromere sp

Vedclass · Accepted Answer

Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) In meiosis-$II$,the sister chromatids separate during anaphase-$II$ due to the splitting of the centromere. Similarly,in mitosis,the centromere splits during anaphase,allowing the sister chromatids to move toward opposite poles. Both processes are equational divisions where the centromere division is a key event. Therefore,both the Assertion and the Reason are correct,and the Reason correctly explains the mechanism involved in the Assertion.

Column $-I$	Column $-II$
$(a)$ Synapsis aligns homologous chromosomes	$(i)$ Anaphase$-I$
$(b)$ Synthesis of tubulin protein	$(ii)$ Zygotene
$(c)$ Action of enzyme recombinase	$(iii)$ $G_2$-phase
$(d)$ Centromeres split and chromatids move towards opposite poles	$(iv)$ Anaphase$-II$
	$(v)$ Pachytene

Column-$I$	Column-$II$
$(1)$ Attachment of spindle fibers to kinetochores	$(a)$ Prophase
$(2)$ Formation of contractile ring in cytoplasm	$(b)$ Telophase
$(3)$ Decondensation of chromosomes	$(c)$ Cytokinesis
$(4)$ Condensation of chromosomal material	$(d)$ Metaphase

$A$: During anaphase-$II$,chromatids of a chromosome separate.
$R$: Centromere of a mitotic chromosome divides during anaphase.

Similar Questions

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During which phase do the centromeres lie on the equatorial plate and the arms point towards the poles?

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$A$: During anaphase-$II$,chromatids of a chromosome separate. $R$: Centromere of a mitotic chromosome divides during anaphase.