An egg cell of a human was found to contain 22 chromosomes. From this informatio

Question

An egg cell of a human was found to contain 22 chromosomes. From this information , you can conclude that? a. It is a normal egg cell b.non disjunction occured during mitosis c.non disjunction occured during meiosis d.egg cells commonly have unisual chromosome numbers. e.the cell was diploid An egg cell of a human was found to contain 22 chromosomes. From this information , you can conclude that? a. It is a normal egg cell b.non disjunction occured during mitosis c.non disjunction occured during meiosis d.egg cells commonly have unisual chromosome numbers. e.the cell was diploid a. It is a normal egg cell b.non disjunction occured during mitosis c.non disjunction occured during meiosis d.egg cells commonly have unisual chromosome numbers. e.the cell was diploid

Explanation / Answer

C) non disjunction during meiosis.

The reason being human egg cell/ sperm cell is haploid (n); n=23. Fertilized egg is diploid ;2n=46

Now nondisjunction is failure of separation of homologou chromosome pair in meiosis resulting in one egg cell contains (n+1) no of chromosome and other cell contains (n-1) no of chromosome.

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