What exactly does the nature act upon when selecting an organism?
1. dominant alleles
2. recessive alleles
3. phenotype
4. combined genotype

Subtopic:  Darwin's Theory | Additional Theories of Darwin | Natural Selection |
 57%
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Identify the incorrect statement:

1.  Neanderthals lived between 1,50,000 and 1,00,000 years back.
2.  Modern Homo sapiens arose between 75000 and 10000 years ago.
3.  Pre-historic cave art developed around 18000 years ago.
4.  Agriculture came around 10000 years ago.

Subtopic:  Concept of Organic Evolution: Evidence | Evolution Prior to Ape Man |
 72%
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Which of the following would be an example of a population that can show the potential for rapid speciation?

1. small in number but highly variable gene pool
2. large in number with large variations in the gene pool
3. sexual dimorphism amongst members
4. isolated inbred population
Subtopic:  Darwin's Theory |
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A population geneticist finds that a new allele in a population has suddenly increased in frequency. Most likely this allele is:
1. mutating rapidly
2. flowing with emigrants
3. strongly selected for
4. a product of assortative mating

Subtopic:  Theory of Evolution & Lamarckism | Additional Theories of Darwin |
 53%
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Which of the following types of natural selection reduces variation but does not change the mean value?

1.directional2.stabilizing
3.disruptive4.all of these

Subtopic:  Natural Selection |
 72%
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In modern terms, selection refers to :

1. inheritance of dominant characters
2. differential reproduction
3. a decrease in allele frequency in a population
4. differences in the contribution of various genotypes to the next generation
Subtopic:  Darwin's Theory |
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An island population faced a natural calamity and the population crashed to only 30 organisms. After some time the number of organisms grew to 5000 but still the threat of extinction is large. This is most likely due to:

1.Founder effect2.Bottleneck effect
3.Edge effect4.Heterosis

Subtopic:  Difference Between Drift & Selection |
 75%
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The number of individuals expressing the dominant phenotype in a population of 200 is 182. What is the frequency of the dominant allele in this population?

1.9 %2.30 %
3.91 %4.70 %

Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law: 2 |
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Humans appeared during the epoch:
1. Pleistocene
2. Pliocene
3. Miocene
4. Oligocene

Subtopic:  Evolution of Homo Sapiens |
 56%
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A mutation appears in a sub-population of organisms separated from the other group by in the same large geographical area. This mutation can spread to the other subgroup by:
1. induced muations
2. mutations in the gene pool of the other subgroup
3. mutation pressures
4. crossovers

Subtopic:  Sources of Variation |
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