2.1 The Imperfection Of Life

Question 1

Adaptation

Answer 1

A phenotype that is selected for within a population.

Question 2

Contrivance

Answer 2

An adaptation that has been evolutionarily modified during the course of its inheritance from the ancestral condition.

Question 3

Exaptation

Answer 3

An adaption possessed by an ancestor that changes over evolutionary time and exists as an adaptation in the descendant.

Question 4

Atavism

Answer 4

A trait possessed by only a few members of the population that is no longer used or has no use in the present environment.

Question 5

Homology

Answer 5

The similarity in traits between individuals as a result of inheritance of those traits from a common ancestor.

Question 6

Homoplasy

Answer 6

When organisms have traits in common, but do not have a common ancestor that provided them with those traits

Question 7

Convergent Evolution

Answer 7

The independent natural selection of similar traits by unrelated individuals