S PHASE AND G2 PHASE

Question 1

What is S phase also known as?

Answer 1

It is also known as the synthetic phase .

Question 2

Duplication of what takes place in the S phase ?

Answer 2

1. Duplication \ replication \ synthesis of DNA and histones takes place
2. Duplications of centriole in animals takes place

Question 3

What happens to the DNA of the cell during this phase ?

Answer 3

The amount of the DNA gets doubled but the number of the chromosomes remain the same ?

Question 4

If the initial amount of the DNA is 2C , then after S phase what will be the amount of DNA ?

Answer 4

ANS ) 4C

Question 5

What is G2 phase also known as ?

Answer 5

It is also known as 2nd growth phase \ pre mitotic phase and post synthetic phase

Question 6

What happens in G2 phase ?

Answer 6

1. DNA synthesis stops
2. Cell attains in maximum size
3. Duplication of Golgi body , ER and mitochondria takes place.
4. Synthesis of the RNA and proteins(like tubulin) takes place.
5. Formation of the microtubules begins