Biology
Grade-9
Easy
Question
Match the following:
- a-1, b-2, c-3
- a-3, b-1, c-2
- a-2, b-3, c-1
- a-3, b-2, c-1
Hint:
- Fertilization is a step in sexual reproduction
- Crossing over occurs during cell division or meiosis
- Variation is the difference in genetic makeup of individuals
The correct answer is: a-3, b-1, c-2
- Fertilization is a step in sexual reproduction, wherein the male and female gamete will fuse together to form a zygote. The gametes are haploid, while the resulting zygote is diploid.
- Crossing over is a step in meiosis. It occurs during the pachytene stage of prophase 1 of meiosis. During this stage, the homologous chromosomes will exchange gene segments with one another, producing genetic diversity.
- Variation is the difference in genetic make up between individuals of the same species. As a result of variation, no two individual appears the same.
- Hence, the correct option is a-3, b-1, c-2
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