A) human population of Pitcaim Island
B) polydactylic dwarfs in Amish population
C) long necked giraffe
D) industrial melanism
Correct Answer: B
Solution :
The variations that occur by chance in a small population are collectively called randomgenetic drift. It is of two types, .i.e., founder effect and bottle neck effect. Bottle necks are natural calamities like earth quakes, floods, tsunamis etc. e.g., poly dactylic dwarf individuals are more in old order Amish population of Lankaster in USA.
You need to login to perform this action.
You will be redirected in
3 sec
