It is a genetic condition caused when an unusual cell division result in an extra full or even partial copy of chromosome 21.

A study led by bioengineers at the University of California San Diego sheds new light on how a type of heart valve disease, called aortic valve stenosis, progresses differently in males and females.

Each of the 23 chromosome types has a unique banding pattern. (A chromosome pair has identical banding.) In fact, scientists can identify a chromosome based solely on its banding pattern.

they might become extinct (if we haven't already extincted ourselves long since), or they might evolve a new sex gene that defines new sex chromosomes." Rest assured, this type of evolution will ...

A single piece of genetic material influences whether someone develops type 1 diabetes, Dutch researchers discovered. People ...

This in turn led to the idea of genetic linkage, which means that when two genes are closely associated on the same chromosome, they do not assort independently (Morgan, 1911). So if linkage ...

We previously reported suggestive linkage between type 2 diabetes and markers in a region on chromosome 20q using data from a collection of 29 Caucasian families in which type 2 diabetes with ...

The analysis of each chromosome type is listed below, including the chromosome that the rearrangement is derived from (der). In this cell, rearrangements are caused by translocations (t ...