The genetic drift is also called as :
1. Sewall-wright effect
2. Hardy-Weinberg equilibrium
3. Balanced polymorphism
4. Gene flow

A small population experiences a sudden crash in size due to a natural calamity. The biggest threat to the population is:
1. loss of genetic variability
2. tendency towards assortative mating
3. reduced gene flow
4. Hardy - Weinberg disequilibrium

Population that experience genetic drift most commonly are:
1. isolated
2. small in number
3. mobile
4. closely adapted to their environment