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Q: Which process is sometimes, called 'reduction division' because it reduces the number of chromosomes to half the normal number to form sperm and egg ?
  • A. Amitotic division
  • B. Cytokinesis
  • C. Karyokinesis
  • D. Meiosis
Correct Answer: Option D - Meiosis is known as reduction division because it reduces the number of chromosomes in a cell by half , resulting in four haploid daughter cells. This process is essential for sexual reproduction as it allows for the formation of gametes (sperm and egg) with half the number of chromosomes as the parent cell, which then combine during fertilization to form a zygote with a full set of chromosome.
D. Meiosis is known as reduction division because it reduces the number of chromosomes in a cell by half , resulting in four haploid daughter cells. This process is essential for sexual reproduction as it allows for the formation of gametes (sperm and egg) with half the number of chromosomes as the parent cell, which then combine during fertilization to form a zygote with a full set of chromosome.

Explanations:

Meiosis is known as reduction division because it reduces the number of chromosomes in a cell by half , resulting in four haploid daughter cells. This process is essential for sexual reproduction as it allows for the formation of gametes (sperm and egg) with half the number of chromosomes as the parent cell, which then combine during fertilization to form a zygote with a full set of chromosome.