Question

How is specific chromosomes number maintained in a sexually reproducing organism?

Answer 1

Chromosomes are made of proteins and DNA. They are present in the nuclei of the cells.In sexually reproducing organisms, the gametes undergo meiosis and hence, each gamete contains only half 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 progenies.

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Answer 2

Explanation:

• Sexually reproducing organism reproduce by forming special germ cells known as gametes.
• These gametes are formed by the process of meiosis which takes place in two phases: Meiosis I and II.
• During meiosis I, the chromosome number is reduced to half that is from 2n to n which is equally distributed during meiosis II.  
• Thus the gametes are formed with n ploidy. These gametes from opposite sex fuse and forms diploid zygote or n+n=2n zygote. This reestablishes the ploidy number in sexual organisms.

To learn more:

1. Meiosis: https://brainly.in/question/1853059

2. Sexual reproduction: https://brainly.in/question/9995809