Question

42.
Which of the following holds true about
meiosis?
(1) It ensures production of haploid phase
in the life cycle of sexually reproduction
organism where fertilization restores the
diploid phase
(11) It involves two sequential cycle of
nuclear and cell division called meiosis I
and II but only a single cycle of DNA
replication
(III) It involves pairing of homologous
chromosomes and recombination
between them
(IV) Four haploid cells are formed at the
end of meiosis II.
(a) I, II, IV only (b) IV only
(c) I and III only (d) All of these​

Answer 1

Answer:

I think d is the answer . please send a message

Answer 2

All the statements are correct.

Explanation:

In order to create children through sexual reproduction, two gametes that each contain a full set of haploid chromosomes must fuse. Diploid cells with specialised functions develop into gametes. Haploid daughter cells are created by this unique type of cell division, which reduces the number of chromosomes by half. Meiosis is the term for this type of division.

In the life cycle of sexually reproducing organisms, meiosis ensures the generation of the haploid phase, whereas fertilisation restores the diploid phase. Meiosis occurs during the gametogenesis process in both plants and animals. Haplozygote formation is the result of this.

These are the main characteristics of meiosis:

• Meiosis requires just one cycle of DNA replication but two successive cycles of nuclear and cell division called meiosis I and meiosis II.
• After the paternal chromosomes have duplicated to form identical sister chromatids at the S phase, meiosis I begins.
• Meiosis involves the pairing and recombination of homologous chromosomes.
• At the conclusion of meiosis II, four haploid cells are produced.

As a result, (d) All of these is the appropriate response.

To learn more about meiosis, click on the links below;

https://brainly.in/question/6905514

https://brainly.in/question/1704343?msp_srt_exp=5

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