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Published byBrent White Modified over 9 years ago
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Evolution Review Get out your journals! Turn to Evolution Stations!
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Charles Darwin Father of: – Evolution Evolution states: all life as we know it came from A common Ancestor
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Peppered Moth Story -Industrial Revolution Time Period
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Fossil Record Comparing fossils from older, more primitive species, to younger, more complex species in rock layers document that evolution has occurred.
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Homologous structures Same Structure/physical traits
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Analogous Structures Same Functions/Different Organisms Bird and Bat Wings Examples:
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Vestigial organs Organs that serve no useful function in organisms. Humans: Appendix Whales: Pelvic Bone
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Having lots of species in an area Biodiversity Differences in Genes Variations These 2 factors lead to increased survival in populations.
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Geographic Isolation: physical barriers –Mountains –Oceans
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Natural Selection Survival of the fittest” Those that are better suited to their environment (better phenotypes or physical characteristics) survive and reproduce successfully
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2. Mutations Mutation A mistake in DNA that contributes to the variation (introduction of new genes) of a species and is very important in evolution.
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Gene Flow Organism’s moving in and out of an area to search for…….. –Hunt for food –Living space –Other resources
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GENETIC DRIFT A change in the population because of a random event, such as a catastrophe The smaller the population, the less genetic variety it has. traits can be lost from one generation to the next.
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Based on this Cladogram, which organism is most closely related to the Chimp? -Mouse
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Based on this Cladogram, all of the organisms have jaws except: -Hagfish
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The Galapagos Island Darwin’s visit to these islands, the differences in the animals, and his observations that habitat can affect the adaptations of organisms.
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-Early eukaryotic cells formed from symbiotic relationships between two prokaryotic cells. The presence of DNA in mitochondria and chloroplasts supports this hypothesis
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Behavioral Isolation
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Camouflage Allows organism to hide from predators
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Artificial Selection humans breed other animals and plants for particular traits.animalsplants Inbreeding is preferential mating with relatives. Inbreeding is a common form of non-random mating. Inbreeding increases the frequency of homozygous genotypes This increases the frequency of recessive genetic disorders. Cute, but prone to genetically-based disorders.
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The Genetic Basis of Evolution are all of the alleles (alternate forms of genes) in all of the individuals that make up a population. Gene Pool
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Temporal Isolation These are closely related species, but the American toad mates in the early part of summer, while the Fowler's toad mates later in the season.
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Adaptation A advantageous trait that allows an organism to better survive. –Ex. Venom –Ex. Camoflauge
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Embryology similarities in the early embryos indicated that they descended from a common ancestor
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Gradualism Evolution happening slowly.
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Punctuated Equilibrium Evolution in a short period of time usually due to some kind of event.
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