Question

Explain the mechanism of inheritance used by sexually reproducing organisms to ensure the stability of DNA of the species.

Answer 1

1. Mechanism: Sexually reproducing organisms maintain DNA stability through meiosis and fertilization.
2. Meiosis: During meiosis, germ cells undergo division where the chromosome number is halved, ensuring each gamete carries only one set of DNA.
3. Fertilization: This process restores the diploid state by combining two gametes, thus maintaining the species’ constant chromosome number.
4. DNA Repair: Additionally, DNA repair mechanisms correct errors during replication, ensuring genetic stability across generations while allowing for minor variations needed for evolution.