Give biological reasons for the following: Gametes have haploids number of chromosome.
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Solution
Gametes are produced as a result of meiosis during which the chromosome number is reduced to half and each daughter cell receives half the set of chromosomes.
These gametes (egg and sperm) unite to form a zygote. If both of them were diploid, the zygote would have twice the number of normal chromosomes and the organism produced would be abnormal.