Question

all the green beetles after a period of time turns into grey colour after the industrial revolution in britain. Explain the reason.

Answer 1

The peppered moth is found throughout Eurasia and North America and can be either white or black. When black and white morphs breed, their offspring are also either black or white (rather than grey), indicating that colour is controlled by Mendelian segregation in this species.

Another notable thing is that their survival tends to rely on them tricking their enemies with camouflage; juvenile caterpillars masquerade as twigs, while the adult moths blend into their surroundings. However, when a species relies on a strategy like this, they become vulnerable when the world changes without them.