Researchers at the Francis Crick Institute have revealed insight into why embryos erase a key epigenetic mark during early development, suggesting this may have evolved to help form a placenta.
Epigenetic changes are modifications to DNA that don’t change the underlying DNA sequence, like notes written on a recipe. They keep gene expression in check, affecting which genes are turned on or off.
A universally inherited epigenetic change among mammals, called DNA methylation, is wiped from the…
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News Source: www.sciencedaily.com
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