Question

If the quantity of dna is 20 pico gram in s phase in a diploid cell then how much dna will it be in meiosis 1

Answer 1

writing Diploid cell you want to know the quantity of DNA during meiosis 1 becoz after meiosis 1, chromosome become half but DNA remain the same and haploid cell forms after meiosis 2.

Now coming to your query, first make clear some basic rules that is egg cell is haploid so n= 10 pg so, in diploid cell that is 2n=20 pg. and you should know that in meiosis 1 replication occur in it's S phase but the same doesn't apply for meiosis 2 becoz replication doesn't occur in it's interphase that's why it's interphase is called interkinesis.

And now G2 comes after S phase so in G2 after replication DNA content become double and it becomes 40 pg.

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