The chirality or handedness of many biological molecules plays an important role in their function .
手性(或手征)在许多生物分子的功能中起着重要的作用。
A review of research , published in 2009 in the journal neuropsychologia , estimated that about 25 % of the variability in handedness is due to genetics .
The emergence of molecules with a specific chirality in a chemical process is usually understood in terms of chiral-specific catalysis , which accelerates the production of molecules of one handedness over the other .