Bootcamp bio question

[virtualmaster999]

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Hey everyone!

So the question states:

"Nondisjunction occurring during meiosis II, followed by fertilization, would result in a zygote with which of the following chromosomal descriptions?"

I'm not sure why aneuploidy is the answer still. I thought that after meiosis 2, the cells would be 1/4 N+1, 1/4 N-1, and 1/2N. I chose haploid because of this.

Could anyone help me with this?

Thanks!