Medically reviewed by Marla Anderson, MD Multiple myeloma is a rare type of blood cancer that forms in plasma cells, a white ...

Scientists found that healthy women can carry genetic changes in their breast cells that are thought to be characteristic of ...

For example, one healthy woman had 70 cells with extra copies of chromosome 1 and 73, as well as missing copies of chromosome 16. The most frequent chromosome changes in these healthy women were ...

Large and rare duplications and deletions in a chromosome region known as 22q11.2 , which involves genes that regulate ...

Numerical chromosomal abnormalities (aneuploidies) -- the presence of an extra chromosome (trisomy) or a missing chromosome (monosomy) -- result from segregation errors during cell division ...

We each get two copies of every gene - one copy from each of our parents. But what happens when one of these genes has been "turned off", or imprinted, and the remaining gene is defective?

Most cells in the human body have 23 pairs of chromosomes and the conditions occur when a person's cells have an extra or missing chromosome. Professor Ian Armit, from the University of York's ...