Study identifies a protein complex possibly crucial for triggering embryo development
Thursday, January 7, 2010 - 01:14
in Biology & Nature
The DNA contained within each of our cells is exactly the same, yet different types of cells - skin cells, heart cells, brain cells - perform very different functions. The ultimate fate of these cells is encoded not just in the DNA, but in a specific pattern of chemical modifications that overlay the DNA structure. These modifications, or epigenetic markers as they are called, are stably carried in our genomes - except for at times when the cells change their fate, such as what occurs when the sperm meets the egg. Then they are erased completely...