14Q When nondisjunction occurs, the chromosome pair in question will possess an extra member after fertilization. The condition is known as what?
1. Triploidy
2. Trisomy
3. Tripartite
4. Aneuploidy
5. None of the above
Correct! Triploidy occurs when all chromosome pairs in a genome have an extra member and aneuploidy refers to organisms whose chromosome number differs from normal by a value other than an exact multiple of some basic monoploid number. So in a sense this too is correct. However since the question focuses on a specific chromosome pair, then answer #2 is most suitable of the two possibilities.