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Meiosis

Question 9 Id...

Question

Question 9
Identify the wrong statement about meiosis
(a) Pairing of homologous chromosomes
(b) Four haploid cells are formed
(c) At the end of meiosis the number of chromosomes are reduced to half
(d) Two cycle of DNA replication occurs

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Solution

Two cycles of DNA replication does not occur in meiosis.
Other options (a), (b) and (c) define the meiotic cell division.

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Q. Identify the wrong statement about meiosis
1. Pairing of homologous chromosomes.
2. Four haploid cells are formed.
3. The number of chromosomes is reduced to half.
4. Two cycles of DNA replication occurs.

Q. Which of the following statements is/are correct?
(A) Meiosis involves two sequential cycles of each event, i.e., DNA replication and nuclear division.
(B) Meiosis involves pairing of homologous chromosomes and recombination between them.
(C) Four haploid cells are formed at the end of meiosis-I.
(D) Meiosis ensures the production of haploid phase in the life cycle of sexually reproducing organisms.

Q. Which of the following statement(s) is/are correct about meiosis?
I. Meiosis involves pairing of homologous chromosomes and recombination between them.
II. Two diploid cells are formed at the end of meiosis-II.
III. Meiosis involves two sequential cycles of nuclear and cell division called meiosis-I and meiosis-II, but only a single cycle of DNA replication.
IV. Meiosis-I is initiated after the parental chromosome replication, which produces identical sister chromatids at the S-phase.

Q. Which of the following statements are incorrect about meiosis ?
(a) It yields four genetically identical cells
(b) It involves two successive divisions without any DNA replication occurring between them.
(c) Intrameiotic interphase involves replication of DNA and centrioles.
(d) Meiosis -I results in the formation of two daughter cells each with haploids number of chromosomes and

1 C

Q. Identify the wrong pair of statements from the following.

(I) Cell organelles are newly formed in G

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phase of cell cycle.
(II) Doubling of DNA occurs in S phase of cell cycle.
(III) The nuclei formed after meiosis I are haploid.
(IV) Terminalization occurs in anaphase I.

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