The discipline of quantum biology has emerged as one of the most exciting new fields in science.
It’s beginning to look as if quantum effects are crucial in a number of biological processes, such as photosynthesis and avian navigation which we’ve looked at here and here.
Now a group of physicists say that the weird laws of quantum mechanics may be more important for life than biologists could ever have imagined. Their new idea is that DNA is held together by quantum entanglement. Entanglement is the weird quantum process in which a single wavefunction describes two separate objects. Phonons are quantum objects, meaning they can exist in a superposition of states and become entangled, just like other quantum objects.
So in this sense, these quantum effects are responsible for holding DNA together.