Q.
A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has
see full answer
Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
twice the number of chromosomes and four times the amount of DNA
b
four times the number of chromosomes and twice the amount of DNA
c
twice the number of chromosomes and twice the amount of DNA
d
same number of chromosomes but twice the amount of DNA.
answer is A.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species has twice the number of chromosomes and four times the amount of DNA.A somatic cell normally has 2n number of chromosomes and 2c amount of DNA. When this cell enters the S phase, The DNA undergoes duplication, but the sister chromatids are still held by the same centromere. Therefore, the number of chromosomes remains the same (2n) but the amount of DNA doubles (4c)When the cells of the same species undergoes meiosis. The number of chromosomes become n and the amount of DNA becomes c. So, we can clearly see that the somatic cells have double the number of chromosomes and four times the amount of DNA.
Watch 3-min video & get full concept clarity