Asked Dec 4, 2019

The amount of DNA in a cell in Gcan be represented as 2C. The amount of DNA in a cell in telophase II is:

a. C

b. 2C

c. 4C

d. 8C

e. none of these

...explain your answer


Expert Answer

Step 1

A single parent cell can divide to form daughter cells, either by the process of meiosis or mitosis. The main motive of cell division is to make the cells grow, reproduces, and develop. In mitosis, a single parent cell divides to form two daughter cells. This process is divided into various stages, interphase, prophase, metaphase, anaphase, telophase, and cytokinesis. Interphase is further divided into the G1 phase, S phase, and G2 phase.

Step 2

Option (a) is C. In the G1 phase of the cell cycle, the DNA number is 2C and the chromosome number is also 2C. As the cell undergoes meiosis I, then by the end of telophase I of meiosis I, the chromosome number gets reduced to half (1C), and DNA count remains the same, that is, 2C. After this, the cell enters the meiosis II and by the end of telophase II, the DNA count also gets reduced to half, that is, C. Hence, this option is correct.

Step 3

Option (b) is 2C. In the telophase I of meiosis I or in the telophase stage of mitosis, the DNA count remains the same, that is, 2C. In the telophase II this DNA count gets reduced to half, C. Hence, this option is incorrect.

Option (c) is 4C. In the S phase of the cell cycle, DNA replication occurs. During this time, the amount of DNA gets doubled, that is, DNA count becomes 4C from 2C. In the telophase II this DNA count get...

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