Mosaicism occurs when two or more groups of cells in a person possess a different genetic makeup. As a mosaicism example, a person might possess some cells that have 46 chromosomes while other ...

Mosaic trisomy 8 is a rare genetic condition caused by an extra chromosome. Sometimes called trisomy 8 mosaicism, this condition develops well before birth. It's a result of an abnormality in how ...

While Emma has Down syndrome — specifically a rare type called Mosaic Down syndrome — some people don’t believe it. “At the hospital, doctors and nurses kept saying, ‘She doesn’t look ...

One such example is brain mosaicism, which happens because some brain cells have different genetic makeups. This can occur after a baby is conceived, leading to a mix of normal and mutated cells ...

Turner syndrome is a chromosomal condition involving a person’s sex chromosomes. It is considered mosaic when an X chromosome is missing in some cells in people who have two X chromosomes.

Mosaic Down syndrome is a variant of Down syndrome. Down syndrome is a congenital (present at birth) genetic condition that occurs when a person has three copies of chromosome 21 instead of two ...