Almonds originally contained cyanide and were poisonous. A natual mutation in the cyanide-producing gene enabled almonds to be eaten and cultivated.

Bananas also are seedless due to a natural mutation.

Green peas are able to be cultivated because a natural mutation allowed a non-sheding coat to preserve what we now eat.

Honey is an antibiotic known snce ancient times. It contains chemicals which peak the cell wall of bacteria.

Poppy seed is mildly addictive, as it contains small amounts of heroin.

Coconut seeds can survive many months in salt water, which it has evolved to migrate.

Tea tree oil is a mild antibiotic.

Orange is the only fruit originally named after a colour. Others followed after the fruit was found.