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प्रश्न
Explain how, in sexually reproducing organisms, the number of chromosomes in the progeny is maintained.
उत्तर
In sexually reproducing organisms, the gametes undergo meiosis, and hence, each gamete contains only half a set of chromosomes. When two gametes fuse, the zygote formed contains the full set of chromosomes. Hence, the formation of gametes by meiosis helps to maintain the number of chromosomes in the progeny.
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संबंधित प्रश्न
The number of nuclei present in a zygote is ______.
Advantages of sexual reproduction.
What is the name of sex cells (other than gametes)?
Give reason for the following:
The parents and off-springs of organisms reproducing sexually have the same number of chromosomes.
Distinguish between a gamete and a zygote.
Describe the histology of testis with help of labelled diagram.
What are the different stages of sexual reproduction?
Identify the correct sequence of events.
Name the two ways by which fertilisation in animals takes place.
