Question

If the amount of DNA in a somatic cell equals C during G1 of interphase, then how much DNA is present in the cell during each phase of mitosis and meiosis? i.e.. Prophase Metaphase Anapase Telophase Each daughter cell

Answer 1

Answer

If the amount of DNA in G1 is C

Then in S phase replication will occur and as a result the amount of DNA Will become double i.e 2C but number of chromosome will be same

In porphase the cell will have 2C DNA

In metaphase also the DNA quantity of the cell will be 2C.

In anaphase Chromosomes divide at centromere. As a result chromosome number will become double and hence each pole will have one set of chromosome with C quantity of DNA. But still the chromosomes are in same cell ths DNA quantity of the cell at anaphase will be 2C

In telophase, nuclear membrane develops around the chromosome at each pole. Each pole will have C quantity of DNA. With total of 2C quantity of DNA In cell

After telophase the 2 daughter cells are formed

Each cell will have C quantity of DNA.