1. Practice quiz

2. QUESTION 1
For centuries, dog breeders have chosen to breed particular dogs to pass on, or even enhance, desirable traits. This is an example of:
Sexual selection
Natural selection
Artificial selection

3. QUESTION 2
In the phrase "Survival of the Fittest" the term "Fittest" refers to the organism's
Physical strength
Number of genes
Suitability for its environment

4. QUESTION 3
A particular breed of hare has a coat that turns white in the winter to blend with the snow in its environment. One winter, no snow falls and the white coats make the hares easy for predators to see against the brown dirt. The most immediate expected result of this environmental change is that
The next generation will have brown coats
The white hares will be eaten
The hares will migrate to a snowy region

5. QUESTION 4 The theory of evolution states that:
Animals become extinct if the environment changes
Alleles that improve survival will be passed down
The organisms that produce the most offspring will survive

6. QUESTION 5
The birds shown above all have very different beak structure. These differences are known in evolutionary biology as
Adaptations
Variations
Acquired traits

7. QUESTION 6 According to Darwin, the driving force behind evolution is
Gene mutation
Inheritance of acquired traits
Natural selection

8. QUESTION 7 Natural selection acts upon Alleles that are expressed
Only alleles that are result of mutations
Only dominant alleles

9. QUESTION 8
The difference in body shape, shown below, are an example of
Variation
Adaptation
Sexual selection

10. QUESTION 9
An individual dyes his hair black and intentionally gorges on food until he is morbidly obese. Which of these traits is likely to be passed on to any offspring?
Obesity
Black hair color
Neither

11. QUESTION 10
The numbers in the picture show the positions of 4 fossils found deposited in the sedimentary rock. Which statement is NOT true?
Fossil #1 is older than fossil #3
Fossil #3 is older than fossil #2
Fossil #4 is the oldest of the fossils

12. QUESTION 11
Fireflies are able to distinguish between their own species and other species by the rate and brightness of their flashing patterns. This is an example of :
Geographical isolation
Behavioral isolation
Mechanical isolation

13. QUESTION 12
Two populations of similar organisms will be considered separate species when they
Look different
Become extinct
Can no longer interbreed and produce fertile offspring

14. QUESTION 13
In a population of woolybeasts, individuals with long snouts tend to survive better on an island that has burrowing termites. Over time, the woolybeast population consists of individuals with extremely long snouts. This is an example of:
Stabilizing selection
Directional selection
Disruptive selection

15. QUESTION 14
The vestigial human tailbone and the prehensile spider monkey's tail are _________ structures.
Analogous
Homologous
vestigial

16. Answer Key C B A
10. A 11. B 12. C 13. B 14. B