Robertsonian chromosomes are large chromosomes that form when the long arm of a chromosome breaks and fuses with another chromosome. They are the most common type of chromosome rearrangement in humans ...

Doctors in Brazil discover and confirm that a woman has blood with male chromosomes, a rare case of human chimerism.

A new study published in Nature Genetics by the Lymphoid Development Group at the MRC Laboratory of Medical Sciences has reveals that the contribution of cells expressing maternal or paternal X ...

Scientists have discovered an association between a variant in the synaptonemal complex protein, SYCE2, and pregnancy loss through the effects of recombination. An international collaboration led by ...

Medically reviewed by Nicholas R. Metrus, MD Key Takeaways Mosaic Down syndrome has some cells with three copies of chromosome 21, and some with two instead of all three.Only about 1% to 2% of people ...

Agrobacterium tumefaciens magnified 15,000 times in an image captured earlier this year with a scanning electron microscope at Iowa State University's Roy J. Carver High Resolution Microscopy Facility ...