$S -$ Statement: Cells cannot maintain their efficient size through mitosis.
$R -$ Reason: Meiosis is an important process for evolution.
$R -$ Reason: Meiosis is an important process for evolution.
- A$S$ and $R$ are both true,and $R$ is the correct explanation of $S$.
- B$S$ and $R$ are both true,but $R$ is not the correct explanation of $S$.
- C$S$ is true and $R$ is false.
- D$S$ is false and $R$ is true.
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Similar Questions
Which of the following is a mitotic poison?
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View SolutionChoose the incorrect statement.
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View SolutionChromosomes become short,dense,and distinct,each chromosome consists of a centromere and two chromatids,and the nucleolus and nuclear envelope disappear. During which phase are these changes observed?
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View SolutionThe following events occur during the various phases of the cell cycle. Name the phase against each of the events.
$(a)$ Disintegration of nuclear membrane .........
$(b)$ Appearance of nucleolus
$(c)$ Division of centromere
$(d)$ Replication of $DNA$
$(a)$ Disintegration of nuclear membrane .........
$(b)$ Appearance of nucleolus
$(c)$ Division of centromere
$(d)$ Replication of $DNA$
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View SolutionIdentify the incorrect statements:
$(1)$ Meiosis involves only a single cycle of $DNA$ replication.
$(2)$ At the end of Meiosis-$I$,four haploid cells are formed.
$(3)$ Mitosis is generally restricted to diploid cells.
$(4)$ In yeast,the cell cycle takes approximately $90$ minutes to complete.
$(1)$ Meiosis involves only a single cycle of $DNA$ replication.
$(2)$ At the end of Meiosis-$I$,four haploid cells are formed.
$(3)$ Mitosis is generally restricted to diploid cells.
$(4)$ In yeast,the cell cycle takes approximately $90$ minutes to complete.
Medium
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