Selection

What is natural selection?

• Mechanism which members of a population that successfully adapted to environment are more likely to survive and reproduce.

• Mechanism of evolution take place in population with geographically separated.

• Mechanism which produce individual that have desirable traits for specific purposes.

• Mechanism which favour individual with intermediate phenotype.

Type of natural selection which act against intermediate phenotypes and favours both extreme phenotypes in a population is ___

• Stabilising selection

• Directional selection

• Distruptive selection

• Sympatric selection

Types of artificial selection are ___

• Sympatric and allopatric

• Inbreeding and outbreeding

• Prezygotic and postzygotic

• Stabilising and directional selection

Inbreeding is a form of controlled breeding which involves__

• Breeding of distance related organisms

• Breeding of closely related organisms

• Produce hybrid vigour offspring

• Results in variations

The evolution of peppered moth (Biston betularia) during the industrial Revolution in England is the example of __

• Directional selection

• Disruptive selection

• Stabilising selection

• Natural selection

In Island A, large size beak bird and small size beak bird can survive while intermediate beak size bird cannot survive.

This is the example of __

• Directional selection

• Stabilising selection

• Disruptive selection

• Natural selection

Different variety of domestic cats is the result of

• Inbreeding

• Outbreeding

• Natural selection

• Directional selection

The crossing between donkey and horse produce a mule. This is an example of

• Inbreeding

• Outbreeding

• Natural selection

• Artificial selection

Offspring produced are known as hybrid vigour. This type of offspring is produced by

• Inbreeding

• Outbreeding

• Natural selection

• Artificial selection

What is the major purpose of artificial selection?

• To produce individual that can survive in the particular environment

• To produce individual that have extreme phenotypes

• To produce individual that have desirable traits for specific purposes

• To produce individual with average phenotypes.