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Evolution 101: Terms, Concepts, and Mechanisms, Quizzes of Biology

Definitions and explanations of key terms, concepts, and mechanisms related to the theory of evolution. Topics include natural selection, sexual selection, genetic drift, genetic flow, fossils, biogeography, comparative anatomy, homology, vestigial structures, comparative embryology, molecular biology, and the relevance of evolution today.

Typology: Quizzes

2010/2011

Uploaded on 10/25/2011

alyssa-coggins
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TERM 1
Evolution
DEFINITION 1
a unifying concept. the genetic composition of a population
changes over time. provide for successful survival and
reproduction. natural selection is the cause of this.
TERM 2
mechanisms of evolution
DEFINITION 2
natural selection>sexual selectiongenetic driftgenetic flow
TERM 3
evidence of evolution
DEFINITION 3
fossils, biogeography, comparative anatomy, vestigial
structures, comparative embryology, and molecular biology
TERM 4
fossils
DEFINITION 4
anything that is preserved in rock
TERM 5
biogeography
DEFINITION 5
the study of the geographic distribution of species that first
suggested to darwin that today's organisms evolved from
ancestral forms
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Evolution

a unifying concept. the genetic composition of a population changes over time. provide for successful survival and reproduction. natural selection is the cause of this. TERM 2

mechanisms of evolution

DEFINITION 2 natural selection>sexual selectiongenetic driftgenetic flow TERM 3

evidence of evolution

DEFINITION 3 fossils, biogeography, comparative anatomy, vestigial structures, comparative embryology, and molecular biology TERM 4

fossils

DEFINITION 4 anything that is preserved in rock TERM 5

biogeography

DEFINITION 5 the study of the geographic distribution of species that first suggested to darwin that today's organisms evolved from ancestral forms

comparative anatomy

the similarity in structures due to common ancestry. it is illustrated by the remodeling of the pattern of bones forming the forelimbs of mammals TERM 7

homology

DEFINITION 7 study the same structures and compare them to common ancestors TERM 8

vestigial structures

DEFINITION 8 remnants of features that served important functions in organism's ancestorsEx:appendix or wisdom teeth TERM 9

comparative embryology

DEFINITION 9 early stages of development in different animal species reveal similar stages in developmentEx:human embryo and chicken embryo TERM 10

molecular biology

DEFINITION 10 the heredity background of an organism is documented in its DNA and in the proteins encoded by the DNA

darwin's theory of natural selection

two key observations:-all species tend to produce excessive numbers of offspring-organisms vary, and much of this variation is heritable (can be inherited) TERM 17

sexual selection

DEFINITION 17 type of natural selection-based on success (or lack of success) in attracting a mate and reproducing-individuals that don't perform well enough to attract a mate may live long lives, but leave no offspring