What can our tastes tell us about our DNA? And why do we all have different taste receptors in the first place? Katherine discovers why the ability to detect bitterness may have had an evolutionary function but also learns that genes cant predict everything. Plus, find out if there are any fatal illnesses lurking in Katherines DNA
Follow along at http://www.routesgame.com/ - and you could be in with a chance to win a Play Station 3.
Routes is a game and a drama from Channel 4 Television: http://www.routesgame.com
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