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Meiotic Cell Division

Which of the ...

Question

Which of the two events together restore the normal number of chromosomes in life cycle?

A

Mitosis and Meiosis

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B

Meiosis and fertilisation

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C

Fertilisation and mitosis

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D

Only meiosis

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Solution

The correct option is B Meiosis and fertilisation
Meiosis and fertilization restore the normal number of chromosomes in the life cycle. Meiosis produces haploid gametes with one set of 23 chromosomes. When two gametes fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes.
So, the correct answer is option B.

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Similar questions

Q. In a comparative study of similar events in Mitosis and Meiosis; the number of Chromosomes is (i)______ and represents two different sets from each (ii)______.

Q. In which stage of meiosis the structures, number and shape of chromosomes can be observed?

Q. The number of chromosomes in normal humans is

46

. After meiosis in sperm production, the number of chromosomes and the number of resulting cells would be

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. Assume the cell has a diploid number of

4

. If the above chromosomes are in the tetrad or bivalent stage of meiosis, which statement below is correct about the events of anaphase I?

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