- 1(current)
Q. No.According to the Darwinian concept of evolution, a giraffe has a long neck because:
| 1. | it was always like that since the beginning |
| 2. | during evolution the number of cervical vertebrae got increased |
| 3. | its ancestors stretched their necks to get food |
| 4. | ancestral giraffes with longer necks got more food and left more surviving offspring |
Subtopic: Â Theory of Evolution & Lamarckism |Â Darwin's Theory |Â Additional Theories of Darwin |
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Level 2: 60%+
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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: Â Theory of Evolution & Lamarckism |Â Additional Theories of Darwin |
 53%
Level 3: 35%-60%
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