Triploid

I know. I meant, that triploid organisms are not fertile and I do not know, whether organism with only one extra chromosome will be fertile, because theoretically the production of gametes should be arrested.

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for example the seedless grapes are triploid hybrids. Triticale is hybrid of two different cereals. Papaya grown on Hawai should be GMO, because they had problems with some virus killing all their plantations.

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... it doesn't have to be hereditary. Question is, what will happen, when the cell will try to split 3 chromosomes 21 into 2 new cells. Usually triploid organisms do not produce gametes, so the question is whether people with Down syndrom are fertile?

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... they are referring to microsporocytes?- 46 chromosomes 92 chromatid? magasporocyte and microsporocytes=diploid 46 and 92 chromatid endosperm = 3N triploid so 69 chromosome 69 chromatid? antipodal and tube cell= 23 chromosomes and 23 chromatid flower petal and parencyma cell of the leaf- I'm assuming ...

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... were supposed to be hit by the chemo, they may have tetraploidy and thus your eggs would be diploid. In consequence, your children would be triploid and thus sterile. But that is only imaginary hypothesis! You need to have your daughter tested.

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