Question

While analyzing a karyotype, geneticists identify a missing chromosome. Which term describes this chromosomal abnormality?
Aneuploidy
Polyploidy
Triploid
Tetraploidy

Answer 1

Hii..

Missing chromosome disorder is known as Aneuploidy...so the correct ans is 1)Aneuploidy...

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Hope this helps!

Answer 2

Answer: The correct answer is Aneuploidy.

When an abnormal number of chromosomes is present in a cell, the condition is called as Aneuploidy. This can include an extra or less number of a particular chromosome. It arises because of non disjunction ( improper segregation of chromosomes between two cells) during cell division.  

For example-  In Trisomy 21 ( also called as Down syndrome), there are three copies of chromosome 21 instead of normal two copies.