"The chromosomal number of the sexually reproducing parents and their offspring is the same." Justify this statement.

(N/A) $(i)$ In sexual reproduction, the fusion of male and female gametes takes place. These germ cells/gametes contain half the number of chromosomes compared to the somatic (body) cells.
$(ii)$ When male and female gametes fuse during fertilization, the zygote formed receives one set of chromosomes from each parent, which restores the original diploid number of chromosomes, thereby ensuring the stability of the species.