Florida International University

PCB evolution

Chapter 4

1)The concept of Darwinian fitness is relative because ...

1. it is a relative measure to the rest of individuals in the population.
2. Darwinian fitness is not relative.
3. fitness is shared among relatives.
4. it depends on who is measuring it.

2. What is the most important conclusion from Darwin's book "On the Origin of Species ..."?

1. Earth's organisms are descent with modification from a single or few common ancestors.
2. The Galapagos are very isolated islands in the Pacific Ocean.
3. Life on Earth is very old.
4. Nothing in Biology makes sense except in the light of Evolution.

3. One of the most important features of Darwin's Theory of Natural Selection is ...

1. that this Theory is testable.
2. all answers are correct.
3. that this Theory reconciles genetics and evolution.
4. that this Theory explains the origin of life on earth.

4. Which traits are adaptive?

1. Those lacking mutations.
2. Those with high evolutionary rates.
3. All answers are correct.

4. Those with high fitness values.

5. How are evolutionary modifications possible according to Darwin?

1. They are not possible.
2. Thanks to mutation.
3. Thanks to recombination.
4. Thanks to natural selection.

6. Natural selection is a process in which events that befall                       alter the collective properties of                                     .
   1. individuals/populations.
   2. finches/the Galapagos islands.
   3. individuals/nucleic acids.
   4. populations/individuals.

7. The concept of natural selection was described at least by                      different authors before its revision by                                        .

1. 4/C. Darwin and A.R. Wallace.
2. 2/T. Malthus and A.R. Wallace.
3. 2/C. Darwin and A.R. Wallace.
4. 4/T. Malthus and A.R. Wallace.

8. Domestication…

1. All answers are correct
2. is a model system for the study of evolution in natural conditions
3. is a model system for the study of evolution in experimental conditions
4. is a form of artificial selection

9. Selection              individuals, resulting in                  in populations.

1. changes/mutations
2. affects/changes
3. mutates/changes