When radioactive thymine is added to the medi | vedclass

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(C) During the $S$-phase of the cell cycle,$DNA$ replication occurs. $DNA$ is composed of euchromatin (transcriptionally active,loosely packed) and he

Vedclass · Accepted Answer

Both heterochromatin and euchromatin

Vedclass · Answer

(C) During the $S$-phase of the cell cycle,$DNA$ replication occurs. $DNA$ is composed of euchromatin (transcriptionally active,loosely packed) and heterochromatin (transcriptionally inactive,tightly packed). Both types of chromatin undergo replication during the $S$-phase to ensure that the daughter cells receive a complete set of genetic material. Since radioactive thymine is a precursor for $DNA$ synthesis,it will be incorporated into the newly synthesized $DNA$ strands of both euchromatin and heterochromatin. Therefore,both types of chromatids will become radioactive.

Option	Figure $A$	Figure $B$
$(a)$	Metaphase	Telophase
$(b)$	Telophase	Metaphase
$(c)$	Late anaphase	Prophase
$(d)$	Prophase	Anaphase

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

When radioactive thymine is added to the medium during the synthesis of new $DNA$ in human cells,which of the following chromatids will become radioactive in cells that enter the phase immediately upon contact with radioactive thymine?

Similar Questions

The major phases of the cell cycle are:

Which stages of cell division do the following figures $A$ and $B$ represent respectively?

Option Figure $A$ Figure $B$

$(a)$ Metaphase Telophase

$(b)$ Telophase Metaphase

$(c)$ Late anaphase Prophase

$(d)$ Prophase Anaphase

Which of the following statements is correct?

Which of the following is mismatched?

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