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6. 'Different variants of a particular gene' is a definition for what?
- Microevolution
- Alleles
- Mutation
- Genes
7. Is genetic drift important in small populations?
8. Mutation creates variation
9. How many deaths a year is sickle cell anaemia responsible for?
- 100,000
- 200,000
- 50,000
- 25,000
10. Favourable mutations are unlikely to survive
11. Is sickle cell anaemia a hereditary disease?
12. 'In populations that are subdivided, both random genetic drift and gene flow can become very important in evolution' is what theory of evolution?
- Balance theory
- Classical theory
- Shifting balance theory
- Neutral theory
13. What is the correct definition of Microevolution?
- A sequence of nucleic acid coding for a function
- The change in frequency in alleles in a population over time
- The change in frequency in genes in a population over time
- A sequence of nucleic acid coding for progress
14. HETEROZYGOTES are the fittest genotype
15. How many processes affect microevolution?
16. 'Most genetic variation maintained by genetic drift of alleles conferring no selective advantage' is what theory of evolution?
- Neutral theory
- Shifting balance theory
- Balance theory
- Classical theory
17. Morphological species concept is what?
- The concept species defined as organisms with shared morphological features
- The concept species defined as organisms with independant morphological features
18. 'Exchange of alleles between populations' is the definition for what?
- Alleles
- Genes
- Genetic flow
- Genetic drift
19. When malaria is absent, NATURAL SELECTION acts to eliminate the sickle-cell allele
20. 'Selection removes genetic variation by favouring alleles that confer greater fitness' is what theory of evolution?
- Shifting balance theory
- Balance theory
- Classical theory
- Neutral theory