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NEET 2019 Odisha · BiologyChromosome countPrevious Year Question

After meiosis I, the resultant daughter cells have

Answer: (B) Twice the amount of DNA in comparison to haploid gamete.. Answer: Twice the amount of DNA in comparison to haploid gamete.

  1. A.Same amount of DNA as in the parent cell in S phase
  2. B.Twice the amount of DNA in comparison to haploid gamete.✓
  3. C.Same amount of DNA in comparison to haploid gamete
  4. D.Four times the amount of DNA in comparison to haploid gamete

Correct Answer

(B) Twice the amount of DNA in comparison to haploid gamete.

Solution & Explanation

Answer: Twice the amount of DNA in comparison to haploid gamete. Solution: Meiosis I is the reductional division: the homologous chromosomes separate but each chromosome still consists of two sister chromatids. So each daughter cell is haploid (n) yet has a 2C DNA amount — twice that of a final haploid gamete (1C), which is reached only after meiosis II splits the chromatids. It is not the same as the parent's S-phase amount (4C) nor four times the gamete (4C). NCERT Reference: Ch 10, p.125, lines 25-26 — "reduces the chromosome number by half results in the production of haploid daughter cells"

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