谋杀案受害者体内发现两套DNA

A woman’s body has been found to consist of varying proportions of male and female cells because of an extremely rare form of chimerism, discovers Michael Le Page THE forensic examination of a murder victim has revealed that she had chimerism – meaning her body contained cells that were genetically distinct, as if they came from two different individuals. Blood analysis revealed a murder victim had both XX and XY chromosomes There are occasionally visible signs of chimerism, as with the singer Taylor Muhl, who has highlighted her chimerism to raise awareness of the condition. More often, however, it is revealed only by genetic testing. One way that XX/XY chimeras can form is when non-identical twins fuse. …