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  • What would be the ratio of chromosome number between an egg and its zygote? How is the sperm genetically different from the egg?

What would be the ratio of chromosome number between an egg and its zygote? How is the sperm genetically different from the egg?

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The ratio of number of chromosomes in egg and zygote is 1:2. The egg is formed by reductional division from the parent cell. Zygote (2n) is formed by fertilization of male (n) and female (n) gametes. Sperms are different from eggs by chromosome number 23 as sperm can either be X or Y chromosome whereas egg has an only X chromosome.

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