Question

If the pollen grain of a plant has 40 pg of dna in its nucleus

Answer 1

Answer:

Then a normal pland cell will have 80pg

Answer 2

Answer:

pollen grain of plant has 40 pg dna in its nucleous. then dna in a diploid cell of same organism in Metaphase - I is 160pg .

Explanation:

• Pollen grain is a haploid structure(n) . Given it is having a DNA of 40pg .
• So a diploid structure will have 2n DNA = 80pg .
• In a cell cycle there are 4 stages - G1, S, G2 and Mitosis( Prophase, Metaphase, anaphase, telophase and diakinesis ) .
• In the S phase the DNA molecules gets replicated so the 80pg becomes 160 pg.
• As metaphase is after S phase the DNA in a diploid cell is 160 pg.

So DNA with a diploid cell at Metaphase is 160pg .

#SP J3