Study sets matching "population evolution chapter 23"

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Study sets matching "population evolution chapter 23"

20 terms
Chapter 23: Population Evolution
genetic variation
microevolution
geographic variation
population
the number and frequency of alleles that are present in a par…
evolution resulting from small specific genetic changes that…
Differences between the gene pools of geographically separate…
a group of organisms of the same species populating a given a…
genetic variation
the number and frequency of alleles that are present in a par…
microevolution
evolution resulting from small specific genetic changes that…
Chapter 23: Population Evolution
Population
Micro evolution
4 sources of genetic variation @ popul…
Cline
Members of the same species in a geographic location that int…
Evolution @ population level
1. Mutations- errors in replication or due to mutagen ... 2. Cro…
Gradual change in character of a population along a geographi…
Population
Members of the same species in a geographic location that int…
Micro evolution
Evolution @ population level
26 terms
Chapter 23 Evolution of Populations
microevolution
macroevolution
population
population genetics
Change in genetic makeup of a population from generation to g…
Evolutionary change above the species level
Group of individuals of the same species living in the same a…
Study of allele frequency distribution and change under the i…
microevolution
Change in genetic makeup of a population from generation to g…
macroevolution
Evolutionary change above the species level
Chapter 23: The Evolution of Population
_______ don't evolve, but __________ d…
Population
Species
Gene Pool
INDIVIDUALS don't evolve, but POPULATIONS do evolve.
A group of individuals of the same species that live in the s…
Group or population whose individual are able to reproduce wi…
Consists of all copies of every type of allele at every locus…
_______ don't evolve, but __________ d…
INDIVIDUALS don't evolve, but POPULATIONS do evolve.
Population
A group of individuals of the same species that live in the s…
24 terms
Chapter 23: The Evolution of Population
Microevolution
Genetic Variation
Average Heterozygosity
Geographic Variation
Change in allele frequencies in a population over generations
Differences among individuals in the composition of their gen…
Average percentage of loci that are heterozygous
Differences in the genetic composition of separate populations
Microevolution
Change in allele frequencies in a population over generations
Genetic Variation
Differences among individuals in the composition of their gen…
27 terms
Chapter 23: The Evolution of Population
_______ don't evolve, but __________ d…
Population
Species
Gene Pool
INDIVIDUALS don't evolve, but POPULATIONS do evolve.
A group of individuals of the same species that live in the s…
Group or population whose individual are able to reproduce wi…
Consists of all copies of every type of allele at every locus…
_______ don't evolve, but __________ d…
INDIVIDUALS don't evolve, but POPULATIONS do evolve.
Population
A group of individuals of the same species that live in the s…
29 terms
Chapter 23: The Evolution of Populations
What evolves?
Population genetics
Gene pool
Hardy-Weinberg equation
populations
Studying changes in a population (gene pool)
All of the alleles in all the individuals that make up a popu…
p^2 + 2pq + q^2 = 1
What evolves?
populations
Population genetics
Studying changes in a population (gene pool)
15 terms
Chapter 23- Population Evolution
Microevolution
Natural Selection
Directional Selection
Disruptive Selection
A change in allele frequency in a population over time
Can drive change in allele frequencies over time
Over time the proportion of individuals with a particular phe…
Patchy Environment... Over time the proportion of individuals ar…
Microevolution
A change in allele frequency in a population over time
Natural Selection
Can drive change in allele frequencies over time
26 terms
Chapter 23 Evolution of Populations
microevolution
macroevolution
population
population genetics
Change in genetic makeup of a population from generation to g…
Evolutionary change above the species level
Group of individuals of the same species living in the same a…
Study of allele frequency distribution and change under the i…
microevolution
Change in genetic makeup of a population from generation to g…
macroevolution
Evolutionary change above the species level
14 terms
Chapter 23: The Evolution of Populations
Population genetics
Population
Gene Pool
Hardy-Weinberg Theorem
The study of how populations change genetically over time
A group of individuals of the same species that live in the s…
All of the alleles at all loci in all the members of a popula…
Used to describe a population that is not evolving
Population genetics
The study of how populations change genetically over time
Population
A group of individuals of the same species that live in the s…
38 terms
Chapter 23 - Evolution of Populations
natural selection
microevolution
3 that can causes allele freq change
only natural selection improves
- evolutionary impact of natural selection is only apparent i…
- change in allele freq in pop over generations... - nat selec n…
1) natural selection... 2) genetic drift - alter freq... 3) gene fl…
- the match between organism and environment aka adaptaion
natural selection
- evolutionary impact of natural selection is only apparent i…
microevolution
- change in allele freq in pop over generations... - nat selec n…
31 terms
Chapter 23: The Evolution of Populations
Microevolution
gene pool
allele
genotype
evolution on the smallest scale—a generation-to-generation ch…
Combined genetic information of all the members of a particul…
An alternative form of a gene.
An organism's genetic makeup, or allele combinations.
Microevolution
evolution on the smallest scale—a generation-to-generation ch…
gene pool
Combined genetic information of all the members of a particul…
Chapter 23: The Evolution of Populations
adaptation
population
gene pool
gene flow
Inherited characteristic of an organism that enhances its sur…
group of individuals of same species that live in the same ar…
aggregate of all copies of every type of allele at all loci i…
transfer of alleles from one population to another, resulting…
adaptation
Inherited characteristic of an organism that enhances its sur…
population
group of individuals of same species that live in the same ar…
29 terms
Chapter 23: The Evolution of Populations
What evolves?
Population genetics
Gene pool
Hardy-Weinberg equation
populations
Studying changes in a population (gene pool)
All of the alleles in all the individuals that make up a popu…
p^2 + 2pq + q^2 = 1
What evolves?
populations
Population genetics
Studying changes in a population (gene pool)
Chapter 23: Evolution of Population
Hardy-Weinberg Requirements:
Hardy-Weinberg equation:
Artificial selection:
Adaptive radiation:
1. Population can't be evolving... 2. Large population size... 3. R…
p2 + 2pq + q2
Mating with individuals that possess desired traits
Some species give rise to alarge number of daughter species t…
Hardy-Weinberg Requirements:
1. Population can't be evolving... 2. Large population size... 3. R…
Hardy-Weinberg equation:
p2 + 2pq + q2
Chapter 23: evolution of population
variation
new alleles
gene number
sexual reproduction
sources of genetic ______ : ... formation of new alleles... alterin…
formation of ____ ____ : arise by mutation - mutations in ger…
altering ____ _____ :... - errors in meiosis can duplicate genes…
- crossing over and independent assortment during meiosis cre…
variation
sources of genetic ______ : ... formation of new alleles... alterin…
new alleles
formation of ____ ____ : arise by mutation - mutations in ger…
37 terms
Chapter 23 - The Evolution of Populations
Evolution is most basically:
Microevolution
5 Agents of Microevolution
What is required for evolution to have…
A change in allele frequencies
Evolution on the smallest scale
- Mutations... - Gene Flow... - Genetic Drift... - Non-random mating... -…
A change in allele freuqencies
Evolution is most basically:
A change in allele frequencies
Microevolution
Evolution on the smallest scale
18 terms
Chapter 23: The Evolution of Populations
adaptive evolution
bottleneck effect
directional selection
disruptive selection
Evolution that results in a better match between organisms an…
Genetic drift that occurs when the size of a population is re…
Natural selection in which individuals at one end of the phen…
Natural selection in which individuals on both extremes of a…
adaptive evolution
Evolution that results in a better match between organisms an…
bottleneck effect
Genetic drift that occurs when the size of a population is re…
31 terms
CHAPTER 23 evolution of populations
-allelic variation... -alleles passed dow…
evolution
microevolution
Hardy-Weinberg Equilibrium principle
darwins 4 postulates, restated
change in allele frequency in population over generations
study of evolution at population level
null model of how populations act when evolution is not occur…
-allelic variation... -alleles passed dow…
darwins 4 postulates, restated
evolution
change in allele frequency in population over generations
Chapter 23- The Evolution of Populations
Microevolution
Genetic variation
Importance of genetic variation
Average heterozygosity
As change in allele frequencies in a population over generati…
Differences among individuals in the composition of their gen…
It is necessary for allelic frequencies to change for evoluti…
The average percentage of loci that are heterozygous
Microevolution
As change in allele frequencies in a population over generati…
Genetic variation
Differences among individuals in the composition of their gen…
32 terms
Chapter 23- The Evolution of Population
allele
average heterozygosity
balancing selection
bottleneck effect
Any of the alternative versions of a gene that produce distin…
The percent, on average, of a population's loci that are hete…
Natural selection that maintains two or more phenotypic forms…
Genetic drift that occurs when the size of a population is re…
allele
Any of the alternative versions of a gene that produce distin…
average heterozygosity
The percent, on average, of a population's loci that are hete…
Chapter 23 Evolution of Populations
microevolution
macroevolution
population
population genetics
Change in genetic makeup of a population from generation to g…
Evolutionary change above the species level
Group of individuals of the same species living in the same a…
Study of allele frequency distribution and change under the i…
microevolution
Change in genetic makeup of a population from generation to g…
macroevolution
Evolutionary change above the species level
31 terms
Chapter 23: Evolution of Populations
microevolution
genetic variation
neutral variation
population
change in allele frequencies in a population over generations…
differences among individuals in the composition of their gen…
differences in DNA sequence that do not confer a selective ad…
group of individuals of the same species that live in the sam…
microevolution
change in allele frequencies in a population over generations…
genetic variation
differences among individuals in the composition of their gen…
The Evolution of Populations (Chapter 23)
genetic variation
phenotype
microevolution
geographic variation
differences among individuals in the composition of their gen…
product of inherited genotype and environmental influence... ONL…
change in allele frequencies in a pop over a generation
differences in the genetic composition of separated pops
genetic variation
differences among individuals in the composition of their gen…
phenotype
product of inherited genotype and environmental influence... ONL…
Chapter 23: Evolution of Populations
microevolution
population genetics
Modern Synthesis
Population
Change in allele frequencies in a population over generations.
The study of genetic changes in populations; the science of m…
A comprehensive theory of evolution that incorporates genetic…
A group of individuals that belong to the same species and li…
microevolution
Change in allele frequencies in a population over generations.
population genetics
The study of genetic changes in populations; the science of m…
29 terms
Chapter 23: The Evolution of Populations
What evolves?
Population genetics
Gene pool
Hardy-Weinberg equation
populations
Studying changes in a population (gene pool)
All of the alleles in all the individuals that make up a popu…
p^2 + 2pq + q^2 = 1
What evolves?
populations
Population genetics
Studying changes in a population (gene pool)
Chapter 23: The Evolution of Populations
Microevolution
Natural Selection, Genetic Drift, Gene…
Alleles
Heterozygous
A change in allele frequencies in a population over generatio…
Three mechanisms that cause allele frequencies to change.
Alternative versions of a gene that may produce distinguishab…
Two different alleles for a given locus (trait).
Microevolution
A change in allele frequencies in a population over generatio…
Natural Selection, Genetic Drift, Gene…
Three mechanisms that cause allele frequencies to change.
29 terms
Chapter 23: The Evolution of Populations
What evolves?
Population genetics
Gene pool
Hardy-Weinberg equation
populations
Studying changes in a population (gene pool)
All of the alleles in all the individuals that make up a popu…
p^2 + 2pq + q^2 = 1
What evolves?
populations
Population genetics
Studying changes in a population (gene pool)
50 terms
Chapter 23- Evolution of Populations
What is the smallest unit of evolution…
Populations
Microevolution
Variation within Populations
populations!
a localized group of individual that are capable of interbree…
a change in allele frequencies in a population over generatio…
caused by difference sin genes or other DNA segments; natural…
What is the smallest unit of evolution…
populations!
Populations
a localized group of individual that are capable of interbree…
26 terms
Chapter 23 Evolution of Populations
microevolution
macroevolution
population
population genetics
Change in genetic makeup of a population from generation to g…
Evolutionary change above the species level
Group of individuals of the same species living in the same a…
Study of allele frequency distribution and change under the i…
microevolution
Change in genetic makeup of a population from generation to g…
macroevolution
Evolutionary change above the species level
49 terms
Chapter 23: Evolution of population
microevolution
4 mechanisms of evolution
genetic variation
how can gene variability be quantified?
change in allele frequencies in a population over generations
natural selection ... genetic drift (chance events) ... gene flow:…
differences among individuals in their composition of genes o…
the ave percent of ioci that are heterozygous
microevolution
change in allele frequencies in a population over generations
4 mechanisms of evolution
natural selection ... genetic drift (chance events) ... gene flow:…
32 terms
Chapter 23 (The Evolution of Populations)
Microevolution
Alleles
Population
Population Genetics
A change in the allele frequencies of a population
Genes for a particular trait
Group of individuals of same species occupying a given area
Emphasizes the extensive variation in a population
Microevolution
A change in the allele frequencies of a population
Alleles
Genes for a particular trait
96 terms
Chapter 23- Evolution of Populations
How do we know when evolution is occur…
What evolves?
What can individuals do?
Types of evolution involved in change…
We have to know genetic and phenotypic similarities
Populations
Live or die; reproduce or not
Microevolution and adaptive evolution
How do we know when evolution is occur…
We have to know genetic and phenotypic similarities
What evolves?
Populations
29 terms
Chapter 23: The Evolution of Populations
What is the smallest unit of evolution?
What is microevolution?
What are the three main mechanisms tha…
What is the only mechanism that is ada…
populations
changes in the allele frequencies of a population over genera…
1) natural selections... 2) genetic drift... 3) gene flow
natural selection
What is the smallest unit of evolution?
populations
What is microevolution?
changes in the allele frequencies of a population over genera…
84 terms
Chapter 23 Evolution of Populations
Microevolution
Genetic Variation
Neutral Variation
Mutation
Evolutionary change below the species level; a change in alle…
Differences among individuals in the composition of their gen…
Genetic variation that does not provide a selective advantage…
A change in the nucleotide sequence of an organism's DNA.
Microevolution
Evolutionary change below the species level; a change in alle…
Genetic Variation
Differences among individuals in the composition of their gen…
18 terms
Chapter 23: Evolution of Population
gene pool
locus
gene frequency
List the five conditions that must be…
all of the alleles for all loci in a population
the position of a particular gene on a chromosome
ratio of a particular allele to the total of all other allele…
1) no mutations... 2) random mating... 3) no natural selection... 4) e…
gene pool
all of the alleles for all loci in a population
locus
the position of a particular gene on a chromosome
Chapter 23: The Evolution of Populations
Do organism evolve during their lifeti…
Microevolution
Mechanism that cause allele frequency…
Genetic Variation
organisms do not evolve during their lifetime, only populatio…
changes in allele frequencies... -changes in p & q
1. natural selection ... 2. genetic drift ... 3. gene flow
is caused by differences in genes or other DNA segments
Do organism evolve during their lifeti…
organisms do not evolve during their lifetime, only populatio…
Microevolution
changes in allele frequencies... -changes in p & q
42 terms
Chapter 23 The Evolution of Populations
What is microevolution?
What are the 3 main mechanisms that ca…
Why is variation important?
Genetic Variation
Microevolution is evolutionary change below the species level…
Natural selection, Genetic drift, & Gene flow
Individuals differed in their inherited traits & that selecti…
differences among individuals in the composition of their gen…
What is microevolution?
Microevolution is evolutionary change below the species level…
What are the 3 main mechanisms that ca…
Natural selection, Genetic drift, & Gene flow
12 terms
Chapter 23: Evolution of a Population
microevolution
genetic variation
neutral variation
population
evolutionary change below the species level; change in the al…
differences among individuals in the composition of their gen…
genetic variation that does not provide a selective advantage…
a group of individuals of the same species that live in the s…
microevolution
evolutionary change below the species level; change in the al…
genetic variation
differences among individuals in the composition of their gen…
28 terms
Chapter 23: Evolution of Population
Microevolution
Macroevolution
Population
Gene Pool
type of evolution that occurs at the species level that happe…
type of evolution that occurs above the species level (taxono…
group of organisms that can interbreed
the stock of different alleles in an interbreeding population
Microevolution
type of evolution that occurs at the species level that happe…
Macroevolution
type of evolution that occurs above the species level (taxono…
42 terms
Chapter 23 The Evolution of Populations
What is microevolution?
What are the 3 main mechanisms that ca…
Why is variation important?
Genetic Variation
Microevolution is evolutionary change below the species level…
Natural selection, Genetic drift, & Gene flow
Individuals differed in their inherited traits & that selecti…
differences among individuals in the composition of their gen…
What is microevolution?
Microevolution is evolutionary change below the species level…
What are the 3 main mechanisms that ca…
Natural selection, Genetic drift, & Gene flow
37 terms
Chapter 23: Evolution of Populations
Microevolution
Population
Gene Pool
Allele
Change in allele frequencies in a population over generations
Group of individuals of the same species that live in the sam…
All copies of every type of allele at every locus in all memb…
Alternative version of gene that can make distinguishable phe…
Microevolution
Change in allele frequencies in a population over generations
Population
Group of individuals of the same species that live in the sam…
31 terms
Chapter 23 - Evolution of Populations (Evolution)
Allele
Diploid Species
Haploid
Polyploid
version of a gene
recessive alleles can be maintained, even if they are deleter…
single set of chromosomes
containing more than two sets of homologous chromosomes
Allele
version of a gene
Diploid Species
recessive alleles can be maintained, even if they are deleter…
Chapter 23 Evolution of Population
Natural selection acts on ____________…
_________ ___________ in populations c…
microevolution
____ and _____ _______ produce the gen…
individuals... populations
genetic variations
is a change in allele frequencies in a population over genera…
Mutation and sexual reproduction
Natural selection acts on ____________…
individuals... populations
_________ ___________ in populations c…
genetic variations
18 terms
Chapter 23 Evolution of Populations
microevolution
macroevolution
population
population genetics
Change in genetic makeup of a population from generation to g…
The development of a new species
Group of individuals of the same species living in the same a…
Study of allele frequency distribution and change under the i…
microevolution
Change in genetic makeup of a population from generation to g…
macroevolution
The development of a new species
CHAPTER 23 - THE EVOLUTION OF POPULATIONS
adaptive evolution
allele
bottleneck effect
directional selection
favoring some alleles over others, results in a better match…
alternative versions of the same gene
severe drop in population passed through a bottle that may dr…
conditions favor individuals exhibiting one extreme of a phen…
adaptive evolution
favoring some alleles over others, results in a better match…
allele
alternative versions of the same gene
Chapter 23: Evolution of Populations
What is microevolution?
what are the three main mechanisms tha…
what is the only mechanism that is ada…
define genetic drift:
evolution on its smallest scale: the change in allele frequen…
natural selection, genetic drift, gene flow
natural selection
chance events that alter allele frequencies. The smaller the…
What is microevolution?
evolution on its smallest scale: the change in allele frequen…
what are the three main mechanisms tha…
natural selection, genetic drift, gene flow
25 terms
Chapter 23: The Evolution of Populations
genetic variation
microevolution
average heterozygosity
geographic variation
the number and frequency of alleles that are present in a par…
evolution resulting from small specific genetic changes that…
the percent, on average, of a population's loci that are hete…
Differences between the gene pools of geographically separate…
genetic variation
the number and frequency of alleles that are present in a par…
microevolution
evolution resulting from small specific genetic changes that…
Chapter 23: Evolution of Populations
Microevolution
Mutation and sexual reproduction
Average heterozygosity
Gene variability
change in allele frequencies in a population over generations
two processes that produce the variation in gene pools that c…
measures the average percent of loci that are heterozygous in…
can be quantified as average heterozygosity
Microevolution
change in allele frequencies in a population over generations
Mutation and sexual reproduction
two processes that produce the variation in gene pools that c…
28 terms
Chapter 23: The Evolution of Populations
microevolution
Three mechanisms that drive microevolu…
average heterozygosity
nucleotide variability
a change in allele frequencies in a population over generations
natural selection, genetic drift, gene flow
measures the average percent of loci that are heterozygous in…
measured by comparing the DNA sequences of pairs of individuals
microevolution
a change in allele frequencies in a population over generations
Three mechanisms that drive microevolu…
natural selection, genetic drift, gene flow
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