when gametes fuse during sexual reproduction normal diploid number of chromosomes are restored.explain

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Solution

Dear student,

Meiosis is the type of cell division in which the contents of the nucleus are divided at the time of preparation for cell division. It divides the chromosome number among gametes. This process thus produces gametes having half the number of chromosome as that of the parent cell. Hence, representing a haploid stage. During the process of fertilization, the two haploid gametes fuse to form a diploid zygote. Thus, restoring the diploid condition. Thus, the process of Meiosis retains the chromosome number during haploid and diploid organisms undergoing sexual reproduction.

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Q. Normally the number of chromosomes in the nuclei of gametes, that fuse at fertilization are

Q. Assertion :The zygote developed from sexual reproduction is diploid. Reason: In sexual reproduction, haploid gametes fuse and form zygote.

Q. Assertion :Asexual reproduction is also called blastogenesis. Reason: In asexual reproduction, there is no formation and fusion of gametes.

Q. Which of the following statement is correct.

Statement I: Asexual reproduction involves fusion of gametes.
Statement II: Asexually produced offspring are genetically identical.
Statement III: Asexual reproduction occurs in unfavorable condition only.

The offsprings formed by asexual reproduction method have greater similarity among themselves because:
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)

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