NEET Previous Year Question

A somatic cell that has just completed the S phase of its cell cycle when compared to the gamete of the same species has

Topic: NEET PYQ

Answer: C. Full step-by-step solution below.

  1. ATwice the number of chromosomes and twice the amount of DNA.
  2. BSame number of chromosomes but twice the amount of DNA.
  3. CTwice the number of chromosomes and four times the amount of DNA.
  4. DFour times the number of chromosomes and twice the amount of DNA.

Correct answer: C

Solution

(c) A somatic cell just after S phase has 2n chromosomes and 4C DNA, while a mature gamete has n chromosomes and 1C DNA. Therefore, the somatic cell has twice the chromosome number and four times the DNA amount.

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