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.
Case | Mirror | Focal Length (cm) | Object Distance (cm) |
---|---|---|---|
1 | A | 20 | 45 |
2 | B | 15 | 30 |
3 | C | 30 | 20 |