Evolution Big Ideas

Evolution Big Ideas

1. The frequency of an allele in a gene pool of a population depends on many factors and may be stable or unstable over time.

2. Variation within a species increases the likelihood that at least some members of a species will survive under changed environmental conditions

3. Natural selection acts on the phenotype rather than the genotype of an organism.

4. Why alleles that are lethal in a homozygous individual may be carried in a heterozygote and thus maintained in a gene pool. (Hint: allele freq. lab)

5. Natural selection determines the differential survival of groups of organisms. (include types of selection)

6. Evidences of evolution

7. Frequency of an allele in a gene pool of a population depends on many factors and may be stable or unstable over time. (gene pool, what factors?, examples)

8. Great diversity of species increases the chance that at least some organisms survive major changes in the environment. (diversity, why is this important?, examples)

9. The effects of genetic drift on the diversity of organisms in a population. (Define, explain and give examples)

10. Reproductive and geographic isolation affects speciation. (Define, explain how it happens, give examples)

11. New mutations are constantly being generated in a gene pool. (How does this link to speciation?)