If an egg cell containing the (n+1) number of chromosomes combined with a sperm cell containing the (n) number of chromosomes, what is the result of this union?

We know the gametes contain n number of chromosomes and the union of two gametes egg and sperm result in the formation of zygote which contains 2n chromosomes.

Given the situation, If an egg cell containing the (n+1) number of chromosomes combined with a sperm cell containing the (n) number of chromosomes, it will result in the formation of a zygote containing (2n + 1) chromosomes, a condition that is known as Trisomic.

Trisomic condition can be of different types like:

Trisomy is basically a chromosomal aberration condition and if it happens in a human it can cause serious birth defects in children for example: Down syndrome. Here are few diseases that can be caused due to Trisomic conditions of child:

Hope it help!

All future somatic cells of the organism will contain the (2n + 1) number of chromosomes.

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