In Galapagos Islands, finches with either large or small beaks were favored since the majority of seeds found on the islands were either large or small. This is an example of:

The removal of deleterious alleles can make the extreme phenotypes selected against. This process is called:

In rare cases, speciation through hybridization can occur without affecting the chromosome number. Such process is called:

Mating between relatives is called ________ which increases  __________.

In a forest, there were 50 rabbits, of which 35 had white fur and 15 had brown. An outbreak of a disease in rabbits resulted in the survival of only 3 rabbits with brown fur only. Which of the following concepts does this example illustrate?

When gene flow into a population introduces a beneficial allele, population fitness ________, whereas when gene flow introduces a deleterious allele, population fitness __________.

Genetic drift can occur as a result of all of these except