Question:
Aneuploidy does not include __________.
Aneuploidy does not include __________.
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Ask which of these describes the completely normal chromosome number.
Updated On: Jul 4, 2026
- monosomy
- disomy
- trisomy
- tetrasomy
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The Correct Option is B
Solution and Explanation
Step 1: Aneuploidy means having one or more chromosomes added to or removed from the normal diploid (2n) chromosome set.
Step 2: Monosomy (2n-1) has one chromosome missing, trisomy (2n+1) has one extra, and tetrasomy (2n+2) has two extra copies of a chromosome, all of which are abnormal, aneuploid states.
Step 3: Disomy (2n) simply means two copies of a chromosome are present, which is the normal, euploid diploid condition, not an abnormal one.
Step 4: Since disomy describes the normal state, it is the one that does not belong to aneuploidy.
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