Tag Archives: DNA

You Have Multiple Genomes

chimera

As reported by the NYtimes in September, researchers have discovered that we have multiple genomes in our cells.  The variance in genomes had previously been thought of as a result of technology limitations, but has recently been acknowledged as a state of being.  A number of mechanisms account for this variance including mutations, pregnancy, and twins.  “In 2012, Canadian scientists performed autopsies on the brains of 59 women. They found neurons with Y chromosomes in 63 percent of them. The neurons likely developed from cells originating in their sons.”  This chimerism and mosaicism has a number of implications including variations in forensic analysis, cancer treatment, disease risk, and organ transplant, amongst others.