Question

a plant species has 10 PG DNA and 8 chromosomes in its pollen grain, then what was the amount of DNA and number of chromosomes in its microspore mother cell at G1 phase--?​

Answer 1

Number of chromosomes in its Microspore mother cell= 16

Amount of DNA= 10PG

STEP BY STEP Explanation:

1. Each anther has four pollen sac, which contain numerous pollen mother cell (PMCs).

2.Each PMC undergoes meiosis to produce four haploid cells. So one pollen grain has 8(n) chromosomes that means PMC at G1 phase will be 16(2n).

Answer 2

there are 8 chromosome which are present in the microspore mother cell in the first growth phase

Explanation:

• the amount of DNA is actually made double in the first growth phase. This is to ensure that there is equal and maintenance of the DNA in both the cells that are formed after division.
• So the amount of DNA that is present will be equal to 20 PG. the first growth phase is that part of the cell cycle when there is increase in the the amount of the DNA to the  double.

To know more,

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