A missing portion of a chromosome,such as the missing portion of the short arm of chromosome 5,in Cri-du-Chat Syndrome is known as:
A) Deletion
B) Duplication
C) Hyperploidy
D) Polyploidy
E) Trisomy

Question

Quizplus · Accepted Answer

The missing portion of a chromosome is known as a deletion. This is the case in Cri-du-Chat Syndrome where a portion of the short arm of chromosome 5 is missing. Duplication refers to having an extra copy of a portion of a chromosome, hyperploidy refers to having extra sets of chromosomes, polyploidy refers to having extra sets of all chromosomes, and trisomy refers to having three copies of a chromosome instead of the usual two.

A Missing Portion of a Chromosome,such as the Missing Portion