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What are the consequences if meiosis not...

What are the consequences if meiosis not happen in the body cells of the organism. ?

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(1) Each organism has a fixed number of chromosomes .
(2) This number has to be maintained in its offspring.
(3) Any sudden change in the number of chromosomes will be harmful to the offspring . Assume parent has 10 chromosomes.
(4) In the absence of meiosis during sexual reproduction gametes will also have the same number of chromosomes as parent i.e., 10 chromosomes.
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