Question

what is the bottlencek effect?

Answer 1

It's the sudden decrease in population size due to a chance event. This is part of the Neutral Theory of Evolution

Answer 2

so would green beetles move to a new location and build a new colony there be an example of bottleneck effect?

Answer 3

That would be the Founder's effect.

Answer 4

Say for example, there are 1000 beetles of different colors. What happens if a man happens to step on say 300 off them?

Answer 5

so would this be an example of bottleneck effect green beetles survive as birds dont see the, where as brown beetles get detected
or insecicied sparying eliminates all but a few of the beetles on a island

Answer 6

Insecticide spraying eliminates all but few of the beetles on an island.