What would happen if the gametes forming a zygote is diploid?
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If the gametes forming a zygote are diploid, it means that there was an error in the process of meiosis, which is the cellular division process that produces haploid gametes. In normal sexual reproduction, gametes are haploid, meaning they contain only one set of chromosomes. When two haploid gametes, one from each parent, combine to form a zygote, which is the fertilized egg, the resulting zygote is typically diploid, containing two sets of chromosomes (one from each parent).
However, if the gametes are diploid, it means that the egg and sperm cells both contain two sets of chromosomes instead of the normal one set. When these two diploid gametes combine to form a diploid zygote, the resulting individual would have four sets of chromosomes instead of the usual two.
This condition is known as polyploidy, and it usually occurs as a result of errors during meiosis. Polyploid organisms are relatively rare in animals but are more commonly found in plants. Most animals cannot survive with a polyploid chromosome number, as it leads to developmental abnormalities and often results in a non-viable embryo. However, some plants can tolerate polyploidy and even thrive with it.