Question

“Each organism has two sets of all genes, one inherited from each parent i.e. both parents contribute equally to the DNA of the progeny during sexual reproduction”. If such is the case, then how is the stability of DNA of the species ensured? Discuss.

Accepted Answer

Specialized reproductive cells (gametes) undergo meiosis during formation, reducing their chromosome number to half (haploid, $n$). When male ($n$) and female ($n$) gametes fuse during fertilization, the original diploid ($2n$) chromosome number and DNA content are restored in the zygote, maintaining constant DNA amount across generations.

Stability of species DNA during sexual reproduction

Explanation

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