On November 24, 1859, ______________ published On the Origin of Species by Means of Natural Selection. Two major points: Today’s organisms descended from _______________. ___________ provided a mechanism for evolutionary change in populations. Came to the conclusion that the Earth was very old and constantly changing. Natural selection and evolution Chapter 16-17

Darwin’s views were influenced by 1. ________ in sedimentary rocks. Fig Fig _________ theory of ____________________ – earth processes are constant over time 2. A 5-year voyage around the world 4.Jean Baptiste __________1809 publication of a theory of evolution based on his observations of fossil chronologies in the Natural History Museum of Paris. EQUATOR Galapagos Islands route of Beagle

The __________________ account suggests rapid creation, not evolution The Origin of Species challenged a worldview that had been accepted for centuries The Darwinian view of life has two main features. (1) The diverse forms of life have arisen by _______ _____________________ from ancestral species. (2) The _________ of modification has been _________ _________ working over enormous tracts of time.

Fig This evolutionary tree of the elephant family is based on evidence from fossils.

____________________ in easily observed ______________-resistance in insects _______________ resistance in humans In each generation the percentage of resistant individuals _______________. __________ favors those characteristics in a variable population that fit the current, local _______________. 3TC-resistant strains of HIV become _______ of the population in just a few weeks. Natural selection does not ________ large-scale evolution and speciation, only ______________

1. ___________________________ For example, the forelimbs of human, cats, whales, and bats share the same skeletal elements, but different _____________ Fig What is the evidence for evolution? Evolution is inferred

2. ___________________ in some creatures Example-some snake skeletons have vestiges of the pelvis and leg bones Fossil whales with vestigal legs and pelvis 3. ______________________ All vertebrates “look” the same as early embryos, then changes are observed later. 4. All of life shares the same ________________ 5. DNA sequences are more _______________in “like” creatures than “unlike” ones

6. The ___________ record Different organisms appear at distinct times in the fossil record 7. Isolated places have distinct ________________ There are numerous unique creatures on isolated islands- Australia, Galapagos islands,…. Old World vs New World monkeys How does one reconcile evolution with Genesis account? Many scholars reject evolution theory outright. Others suggest vast periods of time between 1 st and 2 nd days of Genesis creation-. Others suggest God-directed evolution – ____________evolution Michael _______- suggests that life cannot “just happen”, but is “________________________” But transition creatures are almost non-existent

____________ experiment- Mix NH4, methane, water in intense heat and electrical current Observe simple ___________________ are formed Is this evidence for a ___________ soup forming resulting in an organism? History suggests that our descendents will look back at this generation and say “_________________________”