11 14.2 Evidence for Natural Selection Analogous structures
12 14.2 Evidence for Natural Selection Vestigial Structures
13 14.2 Evidence for Natural Selection Concept Check 14.2Why are older fossils generally in deeper rock layers than younger fossils?How can evolutionary theory explain why Australia is home to relatively few native placental mammals?What are homologous structures?Return to Main Menu
15 14.3 Theory of Natural Selection # offspring producedAdaptedNot adaptedVariations exist in populationsHuman hair colorWolf coloring patternsFrom
16 14.3 Theory of Natural Selection Artificial SelectionSelective BreedingEx. toy poodlesEx. watermelon
17 14.3 Theory of Natural Selection Changes over long periods of timeSuccessful individuals have traits fit for environmentSelective BreedingChanges in a few generationsSuccessful individuals have traits humans like
19 14.3 Theory of Natural Selection Concept Check 14.3In Darwin's view, what conditions lead to a struggle for existence among individuals in a population?What is the goal of artificial selection?Why does a specific pesticide become less effective over time?
21 14.4 Microevolution Concept Check 14.4 What is a gene pool? How has genetic drift affected the world's populations of cheetahs?Describe what is meant by a "biologically fit" organism.
22 14.5 Natural Selection / Health Sickle CellAdvantage?Disadvantage?Antibiotic Resistant Bacteria
23 14.5 Natural Selection / Health Concept Check 14.5Under what conditions is the sickle cell allele beneficial to a heterozygous individual?Identify a possible risk of overuse of antibiotics.Return to Main Menu