Extinction of species providing common food
Weak Signal's progress: basic
The source of this Weak Signal:
FACT: Bananas are (or may be) clones...
Weak Signal's description
Increased reliance on fewer favoured varieties of plant and animal foods increases risk of devastating effect of diseases (could be through genetic selection, GM or just market pressure). For example, with less varieties of apples/rice/wheat there is less diversity and so a larger proportion will be susceptible to any one disease or pest that now extinct species may have had natural resistance too. Same is true of farm animals.
