Mechanism of Evolution
Mechanism of Evolution: Overview
In this topic, we shall understand Hugo De Vries’ idea of mutation, which states that mutations are random and directionless and causes evolution and speciation.
Important Questions on Mechanism of Evolution
What is the mechanism of evolution artificial selection or natural selection?
What is artificial selection in evolution?
What is an example of polymorphism in humans?
Industrial melanism is an example of the effect of anthropogenic activity on evolution.
Explain evolution by anthropogenic action.
Explain the effect of use of DDT on the evolution.
Explain the evolution of anti-bacterial resistant bacteria.
Antibiotic resistance of bacteria is not an ideal example of the effects of anthropogenic activities on evolution.
Excessive use of herbicides and pesticides had led to the evolution of resistant variety of pests.
The peppered moths are found in two distinct forms. One form is dark-coloured and the other is light-coloured. The moths rest on the tree trunks. The light-coloured tree-trunks in an area were darkened by pollution. What would happen to the numbers of the two forms of the peppered moths in that area?
_____ drift is most effective in small populations of organisms.
Which type of selection is a suitable example for industrial melanism? (Directional selection/Disruptive selection/ Facultative Selection)
Explain the terms: Gene pool and Gene frequency.
Which of the following is a post–mating factor causing reproductive isolation?
