In some African populations, the frequency of the sickle cell allele in the human population is much higher than normal. This can be an example of:

1.gene flow2.heterozygote advantage
3.genetic drift4.nonrandom mating

Subtopic:  Hardy Weinberg Law |
 76%

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If you visit Africa you will find an amazing variety of species of living organisms. But you will also notice that different parts of the continents have different biodiversity. This is because the different areas of Africa will have different:

1.evolutionary mechanisms2.ancestors
3.environments4.evolutionary times

Subtopic:  Definition & Types of Evolution |

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Two mya, Australopithecines probably lived in:
1. Western Africa
2. Eastern African grasslands
3. South America
4. South East Asia

Subtopic:  Evolution Prior to Ape Man |
 83%
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Which of the following will not counter natural selection?
1. genetic drift
2. gene flow
3. mutation
4. Unlimited resources

Subtopic:  Other Theories of Origin of Life | Theory of Evolution & Lamarckism | Darwin's Theory | Additional Theories of Darwin |
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For differential success in reproduction, all the following must be present except:

1. Gene flow between populations.
2. Variations must be genetically inherited.
3. Certain variations allow an individual to produce more offspring that survive in the next generation.
4. There must be variations in the phenotypes of individuals.

Subtopic:  Sources of Variation |

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Identify the correct statement:

1.  As the coacervates do not have lipid outer membranes and cannot reproduce, they alone could not have been the precursors of life.
2.  The microspheres could not be induced to constrict but had a large amount of diversity.
3.  The earliest life was probably not driven by solar energy as is seen today.
4.  Protobionts cannot separate a combination of molecules from the surroundings or maintain an internal
environment, but are able to reproduce.
Subtopic:  Examples of Chemical Evolution | Other Theories of Origin of Life |

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The cranial capacity of Homo erectus was around:
1. 450 cc
2. 700 cc
3. 900 cc
4. 1000 cc

Subtopic:  Evolution Prior to Ape Man |
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Which of the following statements is incorrect regarding an evolutionary trend?

1.  It is the continuous change of a character within an evolving lineage.
2.  The number of trends in any lineage is the same as the number of characters evolving.
3.  A trend may be progressive or retrogressive.
4.  Direction and speed of evolutionary trends in a lineage are universal throughout the family and are not subject to variations.

Subtopic:  Modern Theory of Evolution |
 70%

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Which of the following is not a major evolutionary trend seen in the evolution of horses?

1. Progressive increase in the number of toes
2. Increase in the complexity of the molar teeth
3. Lengthening of the limbs in general
4. Enlargement of the brain
Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
 61%

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The “Biogenetic Law” was given by :

1.von Baer2.Ernst Haeckel
3.Hugo de Vries4.Theodosius Dobzhansky

Subtopic:  Concept of Speciation | Concept of Organic Evolution: Evidence |
 70%
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