List the main differences between mitosis and meiosis
3. What is the significance of meiosis?
:: Discuss with your teacher about
Can there be mitosis without DNA replication in 'S' phase?
Can there be DNA replication without cell division?
Analyse the events during every stage of cell cycle and notice hout-
two parameters change
() number of chromosomes (N) per cell
(11) amount of DNA content (C) per cell
r
. Distinguish anaphase of mitosis from anaphase 1 of meiosis.
(i) haploid insects and lower plants where cell-division occurs
(il) some haploid cells in higher plants where cell-division does
Answers
Answer:
Difference between Mitosis and Meiosis
Mitosis is equational cell division whereas meiosis is reductional cell division because chromosome number reduced to half.
Mitosis produces 2 cells whereas meiosis produces 4 cells.
In mitosis, chromatids separate in anaphase whereas in meiosis chromatids do not separate in anaphase I
Signicance of Meiosis
1.Conservation of specific chromosome number
2. Increases the genetic variability
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There can't be mitosis without DNA replication in S phase.
Yes DNA can replicate without cell division
Difference in anaphase of mitosis and meiosis
1. Centromere divides in anaphase in mitosis whereas division of centromere is absent in meiosis I
2. In mitosis anaphase, chromosome has single chromatid whereas meiosis anaphase has two chromatids
3. In mitosis anaphase, chromatids separate and become daughter chromosome whereas in Meiosis anaphase, chromatids do not separate.