O Levels Biology (5090)•5090/11/M/J/19

Explanation
Clones from asexual reproduction are genetically identical
Steps:
- Define genetic identity as having identical DNA sequences from the same source.
- Identify reproduction types: sexual (mixes genes) vs. asexual (copies exactly).
- Evaluate options for asexual processes that produce clones.
- Select the option matching vegetative propagation without genetic variation.
Why B is correct:
- Cuttings from the same plant undergo asexual reproduction, creating clones with identical DNA as defined in cloning biology.
Why the others are wrong:
- A: Brothers and sisters result from sexual reproduction, introducing genetic variation through meiosis and fertilization.
- C: Gametes from the same parent are haploid and unique due to crossing over and independent assortment.
- D: Seeds produced by the same tree involve sexual reproduction, leading to diverse offspring genetics.
Final answer: B
Topic: Asexual and sexual reproduction
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