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Question

Statement 1: In diploid organisms, chromosomes occur in pairs.

Statement 2: In each pair, one chromosome is from the mother, and the other is from the father.


A

Both statements are wrong

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B

Both statements are right

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C

Statement 1 is right, statement 2 is wrong

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D

Statement 2 is right, statement 1 is wrong

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Solution

The correct option is B

Both statements are right


The correct option is B.

Explanation for the first statement:

  1. Diploid cells are denoted as 2n where n represents the number of chromosomes.
  2. In diploid cells, every chromosome is two in number. It's called the homologous chromosome.
  3. For example, in humans, we have a total of 46 chromosomes which means there are 23 types of chromosomes in human cells. Each has a pair.

Explanation for the second statement:

  1. Every species has a fixed chromosomal number.
  2. When a zygote forms, both parents give chromosomes equally.
  3. So 'n' number of chromosomes comes from each parent.
  4. So in diploid cells in two pairs there is one from the mother and one set of chromosomes from the father.

Final answer: Both the statements are right


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