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Question

Choose the correct statement regarding chromosomes.

Statement 1: The number of chromosomes in parents and offsprings of a particular species remains constant.

Statement 2: Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half.
  1. Both the statements are correct
  2. Both the statements are incorrect
  3. Statement 1 is correct
  4. Statement 2 is correct


Solution

The correct option is A Both the statements are correct
During meiosis or reduction division, a diploid parent cell, which has two copies of each chromosome, undergoes division to produce 4 haploid cells, each having a single set of chromosomes. Each haploid cell becomes a gamete (either sperm or ovum).
During fertilisation, the sperm and ovum fuse to form a zygote. The zygote is a diploid cell having, one set of chromosome from mother and one set from the father. Hence, the number of chromosomes in the child remains constant as their parents.
 

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