The most critical evolutionary process, that leads to changes in allele frequencies and favors or promotes adaptation as a product of evolution, is :

1.	Genetic drift	2.	Gene migration
3.	Mutation	4.	Natural selection

The differential success in the reproduction, of an organism, in a given environment, is :

A small population experiences a sudden crash in size due to a natural calamity. The biggest threat to the population is:
1. loss of genetic variability
2. tendency towards assortative mating
3. reduced gene flow
4. Hardy - Weinberg disequilibrium

What exactly does the nature act upon when selecting an organism?
1. dominant alleles
2. recessive alleles
3. phenotype
4. combined genotype

Identify the incorrect statement:

Which of the following would be an example of a population that can show the potential for rapid speciation?

A population geneticist finds that a new allele in a population has suddenly increased in frequency. Most likely this allele is:
1. mutating rapidly
2. flowing with emigrants
3. strongly selected for
4. a product of assortative mating

Which of the following types of natural selection reduces variation but does not change the mean value?

In modern terms, selection refers to :

An island population faced a natural calamity and the population crashed to only 30 organisms. After some time the number of organisms grew to 5000 but still the threat of extinction is large. This is most likely due to: