Allopatric speciation Study guides, Class notes & Summaries
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What is microevolution? - The change in allele frequencies that occurs over time within a population. 
What is macroevolution? - Major evolutionary changes over time, the origin of new types of 
organisms from previously existing, but different, ancestral types. 
What is a species? - A group of populations whose members possess similar anatomical 
characteristics and have the ability to interbreed. 
What is allopatric speciation? - The formation of a new species in populations that are geographi...
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Natural selection - ANSWER Process that determines which individuals will pass on their genes to the next generation 
 
Evolution - ANSWER the changes that we see in the genes and characteristics displayed by successive generations of a population 
 
Speciation - ANSWER the production of a new species from a previously existing species 
 
Allopatric speciation - ANSWER separated by land 
 
Sympatric speciation - ANSWER speciation in the same area; exploiting unused resources causes them to becom...
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Micro-evolution - Answer-- a change in an evolution's gene pool over a succession of generations 
- changes in allele frequencies within populations 
- often associated with adaptation 
- can be measured from one generation to the next 
Macro-evolution - Answer-- major changes in the history of life 
- origin of new species 
- generates biological diversity 
Species - Answer-A population or group of populations whose members have the potential to 
interbreed with one another in nature to produc...
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AP Biology Exam Questions and Answers Graded A+
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AP Biology Exam Questions and Answers Graded A+ 
What are the 2 theories of evolution? Explain each 
Gradualism- geologic changes result from slow, gradual, continuous process 
Punctuated Equilibrium- Long period of stasis punctuated by short bursts of significant change. 
 
 
What was Lamarck's theory and why was it wrong? 
Lamarck = Inheritance of Acquired characteristics- traits acquired during lifetime could be passed on 
 
 
What is natural selection 
Comptetition for limited resources re...
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What is micro-evolution? - Changes in allele frequencies within populations, often associated with 
adaptation, can be measured from one generation to the next 
"small changes" 
What is macro-evolution? - Major changes in the history of life, origin of new species, generates 
biological diversity 
"big changes" 
What is a species? - a group of populations whose members have the potential to interbreed with 
one another in nature to produce fertile offspring 
What is allopatric speciation? - ...
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Penn Foster Proctored Exam Intro to Biology (16-24) Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+
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Which of the following is a postzygotic isolating mechanism? 
: Hybrid sterillity 
The courtship rituals performed by some male birds to attract females of the same 
species are an example of ___ isolation. 
: Behavioral 
Speciation due to geographic barriers separating populations is called ___ speciation. 
: Allopatric 
All of the following factors have been implicated in mass extinctions, except: 
2 | P a g e 
A. Continental Drift 
B. Punctuated Equilibrium 
C. Meteorite Impact 
D. Loss of H...
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Monophyletic Group - Answer-includes all the descendants of a common ancestor, and its considered 
a natural grouping of organisms based on a shared ancestry. 
Paraphyletic Group - Answer-some (not all) of descendants of a common ancestor 
Polyphyletic Group - Answer-organisms from distinct lineages based on shared characters, but no 
common ancestor 
Homologies - Answer-similarities based on shared ancestry 
Analogies - Answer-similarities based on independent adaptations 
Synapomorphies - Answ...
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he world, in the US - 5500, 965 
Number of threatened/endangered mammal species - 1000 
What separates mammals from birds, reptiles, and amphibians - Mammals have hair, mammary 
glands, and three ear bones. 
What distinguishes birds from mammals, reptiles, and amphibians - Feathers 
Number of species of birds in the world, in North America, in the US - 9900, 2000, 925 
Number of threatened/endangered bird species - over 1000 
Number of reptile species in the world - 8200 
Number of reptile speci...
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What is microevolution? - ️️The change in allele frequencies that occurs over time within a population. 
 
What is macroevolution? - ️️Major evolutionary changes over time, the origin of new types of organisms from previously existing, but different, ancestral types. 
 
What is a species? - ️️A group of populations whose members possess similar anatomical characteristics and have the ability to interbreed. 
 
What is allopatric speciation? - ️️The formation of a new species in po...
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AP BIOLOGY MIDTERM EXAM
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AP BIOLOGY MIDTERM EXAM 
which of the following principles is NOT part of Darwin's original theory of evolution by natural selection? 
A. Evolution is a gradual process that occurs over long periods of time. 
B. Variation occurs among individuals in a population. 
C. Mutations are the ultimate source of genetic variation. 
D. More individuals are born than will survive. 
C 
 
 
If a population is ini Hardy Weinberg equilibrium then: 
A. it is evolving to adapt to environmental changes 
B. the f...
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