Question
Science Question on Heredity and Evolution
“Stability of DNA in a species is ensured during sexual reproduction.” Justify the statement.
Answer
During sexual reproduction, DNA stability is ensured because:
• Gametes are formed by meiosis, which reduces the chromosome number to half,ensuring that the offspring receives a stable DNA set when gametes fuse.
• Crossing over and recombination during meiosis maintain genetic variation without altering the basic DNA structure.
These processes preserve the genetic information and ensure the stability of DNA across generations.