Question

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

Hint:

Sexual reproduction combines genetic material from two parents, ensuring stability and diversity in the DNA of offspring, while maintaining the integrity of the species' genetic code.

Answer 1

Inheritance and stability of DNA:
The mechanism of inheritance involves the transmission of genetic information from parents to offspring. In sexually reproducing organisms, this process begins with the formation of gametes (egg and sperm) through meiosis, a type of cell division that halves the chromosome number.
When the male and female gametes combine during fertilization, they form a zygote with a complete set of chromosomes, ensuring the stability of the species' DNA. This fertilized zygote contains genetic material from both parents, preserving genetic diversity while maintaining the integrity of the DNA.
The stability of the DNA is maintained by accurate DNA replication during cell division, ensuring that each new cell contains the correct genetic information. Additionally, sexual reproduction introduces genetic variation, which enhances the adaptability of the species over time, without altering the overall DNA structure. Thus, the stability of DNA is maintained through the processes of meiosis, fertilization, and accurate DNA replication during cell division.