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Study Guide For Quest 3 Evolution and Natural Selection:
Key Terms:
Variation
Sickle Cell Anemia
Malaria
Evolution
Theory
Charles Darwin
On the Origin Of Species
Artificial Selection
Competition
Fitness
Adaptation
Natural Selection
Descent with Modification
Transitional Fossil
Tiktaalik
Hox genes
Switches
Tetrapods
Fossil Record
Sonic Hedgehog Gene
Geographic Distribution of Living Species
Homologous Body Structures
Analogous Structures
Vestigial Organs
Embryo
Key Concepts:
1. Advantageous traits tend to increase in a population due to natural selection.
2. Sickle Cell Anemia’s relationship to Malaria illustrates adaptation, natural
selection and evolution at work in a population.
3.Difference between artificial selection and natural selection.
4. Difference between adaptation and fitness.
5. Transitional fossils provide evidence for the origin and divergence of major
biological lineages a lineage being a sequence of species that evolved from a
common ancestor. Transitional fossils represent the ancestors of new groups of
organisms and show us how new lineages evolved.
6. Very similar genes control the development of related structures in different
organisms. However, switches control genes by turning genes on or off and
impacting the timing and intensity of the outcome of structures.
7. The human body contains genes and structures that we inherited from distant
animal ancestors.
8. Understand the evidence that supports Darwin’s theory of evolution and natural
selection.