Which mechanism of evolution is capable of producing adaptations over successive generations?

Which mechanisms cannot operate unless there is genetic variation?

In relation to natural selection, evolution is the

The occurrence of large or small beak sizes among seed crackers in the absence of medium-sized beaks is an example of

The movement of new genes into a population as a result of migration

A virus killed most of the seals in the North Sea (e.g., dropped the population from 8000 to 800). In an effort to help preserve the species, scientists caught 20 seals and used them to start a new population in the northwest Pacific Ocean. Which of the following factors would most likely have the least impact in this new population?

A population that has achieved genetic equilibrium (i.e. is not evolving) according to the modern synthesis must meet all but which of the following criteria

Which statement most accurately reflects what population geneticists refer to as "fitness"?

Which one of the following would disturb genetic equilibrium (i.e. Hardy-Weinberg equilibrium)

The effects of genetic drift are most apparent in small populations.

Evolution results in progress; organisms are always get better through evolution.

Genetic drift only occurs in small populations.

Natural selection gives organisms what they need.

Natural selection is about survival of the very fittest individuals in a population.