What is a trisomy?
A)Three copies of a specific autosome
B)Fragile-X syndrome
C)A sex-linked syndrome
D)A third pair of chromosomes

Question

Quizplus · Accepted Answer

Trisomy refers to the presence of three copies of a specific autosome (non-sex chromosome) instead of the usual two copies. This can occur due to errors in cell division during meiosis, resulting in the inheritance of an extra chromosome. Examples include Down syndrome (trisomy 21) and Patau syndrome (trisomy 13). Fragile-X syndrome and sex-linked syndromes do not necessarily involve trisomies, and a third pair of chromosomes would not be a relevant answer because humans only have 23 pairs of chromosomes (46 total).

What Is a Trisomy