genes linked to taste

Africans may be better able to taste PTC(phenylthiocarbamide)

Whereas asians and europeans have only two versions of TAS2R38, the gene that lets us taste PTC,africans have several different variants.

Tas1R3 has been linked to the taste of sweetness,most europeans have both of the two version of the gene.
Variants of this gene are less prevalent in asian amd middle eastern people, and least prevalent in africans.

In the pamir mountains of northeastern afghanistan 37% of people are `supertasters', a bit of dark chocolate  would taste bitter,only 7-15% of europeans are `supertasters'.

There are 25 T2R genes of which there can be several versions.
A variation of the T2R16 bitter taste receptor present in central africa metabolizes glycosides in the stomach releasing toxic cyanide,believed that this variation persists because it offers resistance against malaria.

Those with T2R38 cannot taste  PTC