Question

while analyzing a karyotype, geneticists identify a missing chromosome. which term describes this chromosomal abnormality?
aneuploidy
polyploidy
triploidy
tetraploidy

Explanation:

• Aneuploidy is a condition where there is an abnormal number of chromosomes (either missing or extra).
• Polyploidy refers to having more than two complete sets of chromosomes (e.g., triploidy - three sets, tetraploidy - four sets). Since the question is about a missing chromosome (abnormal number but not extra sets), polyploidy (including its subtypes triploidy and tetraploidy) is incorrect.

Answer:

aneuploidy