Speciation event - Study guides, Class notes & Summaries
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Pre-lab 1 (QUESTIONS AND ANSWERS) University of California, Davis BIS 2C 002C
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Question 1. What two things do nodes represent on phylogenies? 
Nodes represent the most recent common ancestor of two or more descendant 
lineages and represent a speciation event. 
Question 2. Compare the branching patterns of phylogenies 1-3 above. Which 
statement below correctly describes the patterns among trees 1-3? 
Tree 1 = Tree 2 
Question 3. Which node represents the MRCA for taxa F and G? 
3 
Question 4. Which taxon or taxa is/are the sister group to E + F? 
D, G, H 
Question 5. If y...
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Hondros BIO 117 Exam 1 (2024/2025) Answered Correctly – Expert Verified | Latest Version
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Allopatry - Vicariance - Chance separation (earthquake, etc.) 
Allopatry- Dispersal - A population moves to a new habitat, colonizes it, and forms a new population 
Although both are possible, which of the following situations is more probable regarding the 
evolutionary history of a species (i or ii): 
i. Common characteristics are usually shared with other closely related organisms 
ii. Common traits evolved several times throughout history and have nothing to do with shared ancestry 
- i? 
Ap...
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BSC 108 Final Exam | 100% Correct | Verified | 2024 Version
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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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Gobetz Bio 150 Final Exam Correct 100%(Graded A+)
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Gobetz Bio 150 Final Exam Correct 100%(Gradpopulation - ANSWER an interbreeding (sharing genetic information) group of individuals who live in the same geographic area and exist at the same time 
 
variability within a species/population (importance) - ANSWER important because: 
-some genetic variations have advantages over others 
-natural selection can act on the variation that arises 
 
What if populations are separated and can't exchange genes? - ANSWER two processes can occur: 
1. genetic ...
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Gobetz Bio 150 Final Exam Correct 100%(RATED A+)
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population - ANSWER an interbreeding (sharing genetic information) group of individuals who live in the same geographic area and exist at the same time 
 
variability within a species/population (importance) - ANSWER important because: 
-some genetic variations have advantages over others 
-natural selection can act on the variation that arises 
 
What if populations are separated and can't exchange genes? - ANSWER two processes can occur: 
1. genetic divergence 
2. speciation 
 
genetic diverg...
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BSC 108 Test 4 Questions and Answers(A+ Solution guide)
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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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BSC 108 Final Exam Yates | 150 Questions with 100% Correct Answers | Verified | Latest Update 2024
- Exam (elaborations) • 16 pages • 2023
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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? - ...
-
BSC 108 Final Exam Yates | 150 Questions with 100% Correct Answers | Verified | Latest Update 2024
- Exam (elaborations) • 16 pages • 2024
- Available in package deal
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- $12.49
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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? - ...
-
BIOLOGY 142 test 1 delgado Questions And Answers With 100% Correct Answers
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3. ________ isolating mechanisms prevent the fusion of gametes where as _______ isolating 
mechanisms prevent the proper functioning of the zygote. - Prezygotic, post zygotic 
• Adaptive radiation - o Existence of groups of closely related species that have recently evolved 
from a common ancestor by adapting to different parts of the environment. This is common in situations 
in which species occur in an environment with few other species and many available resources. 
o Adaptive radiation re...
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bisc 162 study guide || with Error-free Solutions.
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the purpose of the development of a vacuole is correct answers digest food, regulate excess water and regulate internal environment 
 
if a virus that normally infects cells in the lining of an elephant's lungs enters a rhinoceros correct answers it cannot infect the rhinoceros because a virus is specific to a cell type and a species 
 
photoheterotrophs get their energy from blank and their carbon source is correct answers light carbon source 
 
chloroplast arose twice on a phylogentic tree ma...
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