Down Syndrome is an example of which chromosomal condition?

Down Syndrome is a chromosomal condition that results from the presence of an extra copy of chromosome 21, leading to a total of three copies instead of the usual two. This condition is scientifically referred to as Trisomy 21. The additional genetic material affects physical and cognitive development, resulting in the characteristic features and developmental challenges associated with Down Syndrome.

Monosomy refers to the absence of one chromosome from a pair, while nullisomy indicates the complete absence of a chromosome pair. Euploidy denotes a complete set of chromosomes, which is not relevant in the context of Down Syndrome. Therefore, Trisomy 21 accurately describes the genetic basis of this condition, distinguishing it from the other chromosomal abnormalities mentioned.