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Chapter 24 SECT 1&2

QuestionAnswer
What is typological thinking? the thought that species are unchanging and that variations are unimportant and misleading
What did Plato say? All animals/species are of perfect essence and are created by God
What did Aristotle say? He brought about the Great Chain of Being - where all animals are fixed and that there is a linear scheme of complexity
What did Lamark say? He said that species do change over time in order to reach perfection.
What was Lamark's idea based off of? The Great Chain of Being by Aristotle
Giraffes develop children with long necks due to frequent stretching in order to reach leaves that are high above the ground. What idea would this be an example of Lamark's
What did Darwin and Wallace say? There was evolution through natural selection. Brought about population thinking
What is population thinking? where there are variation among species
What is evolution? descent with modifications. species change throughout time an are related to common ancestry
What are the evidence for evolution? Fossil record, geological time scale, transitional features, and vestigial features
What are fossil records? all fossils found and described in scientific literature
What is a fossil? Any trace of an organism that lived in the past
What describes a species that is now living today? An extant species
What forms layers near beaches and volcanic rocks that allowed scientists to discover that Earth was at least 6000 years old? Sedimentary rocks
What are transitional features? linkage between older and younger species
What is the law of succession? general observation that the extinct are succeeded by similar species
What are vestigial traits? reduced or incompletely developed strucutre that is useless or almost useless
What is homology? study of likeness
What are three parts into studying homology? genetic homology, developmental homology and structural homology.
Created by: missshelly
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