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Study sets matching "population evolution"

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Study sets matching "population evolution"

30 terms
Population Evolution
Population evolution encompasses what…
Genetic Drift
What size population is most affected…
What process contributes to gene flow?
1. Genetic Drift... 2. Gene Flow... 3. Nonrandom mating... 4. Mutation…
Random changes in gene variation in a population
Small populations
Migration
Population evolution encompasses what…
1. Genetic Drift... 2. Gene Flow... 3. Nonrandom mating... 4. Mutation…
Genetic Drift
Random changes in gene variation in a population
11 terms
population evolution
population evolution
frequencies expressed as..
in darwin's eyes evolution was a..
what is the mathematic definition of e…
shows evolution as a change in gene frequencies of a populati…
as a definition
talent
change in allele frequencies
population evolution
shows evolution as a change in gene frequencies of a populati…
frequencies expressed as..
as a definition
27 terms
Evolution of Population
Gene pool
Directional selection
Stabilizing selection
Disruptive selection
all genes, including all the different alleles, that are pres…
when individuals at one end of a distribution curve have high…
when individuals near the center of a distribution curve have…
natural selection that favors individuals at either extreme o…
Gene pool
all genes, including all the different alleles, that are pres…
Directional selection
when individuals at one end of a distribution curve have high…
30 terms
Population Evolution
Population evolution encompasses what…
Genetic Drift
What size population is most affected…
What process contributes to gene flow?
1. Genetic Drift... 2. Gene Flow... 3. Nonrandom mating... 4. Mutation…
Random changes in gene variation in a population
Small populations
Migration
Population evolution encompasses what…
1. Genetic Drift... 2. Gene Flow... 3. Nonrandom mating... 4. Mutation…
Genetic Drift
Random changes in gene variation in a population
23 terms
The Evolution of Populations
Allele
Gene
Gene pool
Population
Alternative forms of a gene for each variation of a trait of…
A segment of DNA on a chromosome that codes for a specific tr…
All the genes, including all the different alleles for each g…
A group of individuals that belong to the same species and li…
Allele
Alternative forms of a gene for each variation of a trait of…
Gene
A segment of DNA on a chromosome that codes for a specific tr…
37 terms
Evolution in populations
Directional Selection
Disruptive Selection
Stabilizing Selection
Phenotype
favors ONE extreme
favors BOTH extremes
favors the AVERAGE phenotype
THIS is what natural selection acts on in an organism
Directional Selection
favors ONE extreme
Disruptive Selection
favors BOTH extremes
25 terms
POPULATION EVOLUTION
mutation
diploidy
quantitative characters
discrete characters
ultimate source of new alleles
having 2 alleles for one trait
traits vary along a continuum
traits are either/or
mutation
ultimate source of new alleles
diploidy
having 2 alleles for one trait
27 terms
Population Evolution
gene pool
allele frequency
phenotype frequency
a population is constant...
the total genetic information in a population
divide the occurrence of a desired allele by the total number…
divide the occurrence of a phenotype by the total number of o…
...until influenced
gene pool
the total genetic information in a population
allele frequency
divide the occurrence of a desired allele by the total number…
16 terms
Population Evolution
What is the population Evolution
the stock of different genes in an int…
Genetic Isolation, Migration (gene flo…
the process whereby organisms better a…
Effects of population size, Gene Pool, Factors that affect al…
Gene pool
Factors that affect allele frequency
Natural Selection
What is the population Evolution
Effects of population size, Gene Pool, Factors that affect al…
the stock of different genes in an int…
Gene pool
10 terms
Population Evolution
Genetic Variation
Mutation
Natural Selection
Stabilizing Selection
Variety in the alleles of genes within and among populations.
Any change in the nucleotide sequence of an organism's DNA.
Individuals in a population exhibit variation in their herita…
Favoring of the intermediate phenotypes in a population.
Genetic Variation
Variety in the alleles of genes within and among populations.
Mutation
Any change in the nucleotide sequence of an organism's DNA.
21 terms
Evolution of Populations
gene pool
allele frequency
single-gene trait
polygenic trait
All the genes in a population at any one time
how often a form of a gene appears in a gene pool
trait controlled by a single gene that has two alleles
Traits controlled by two or more genes
gene pool
All the genes in a population at any one time
allele frequency
how often a form of a gene appears in a gene pool
32 terms
Population evolution
adaptive radiation
behavioral isolation
bottleneck effect
coevolution
when organism evolve and fit all parts of an ecosystem: live…
members of a population start to act differently and stop bre…
a disaster wipes out part of a population and the gene freque…
when organisms live together and evolve together (coral and t…
adaptive radiation
when organism evolve and fit all parts of an ecosystem: live…
behavioral isolation
members of a population start to act differently and stop bre…
Evolution and Population
Population
Gene Pool
Relative Frequencey
Mutation
Is a collection of individuals of the same species in a given…
Is the combined genetic information of all the members of a p…
It is the amount of times that one allele occurs in a gene po…
Any change in the genetic sequence of DNA
Population
Is a collection of individuals of the same species in a given…
Gene Pool
Is the combined genetic information of all the members of a p…
13 terms
Population evolution
modern synthesis
microevolution
macroevolution
evolution
The coherent understanding of the relationship between natura…
Change below the species level. Change in allele frequencies…
Change above the species level. Microevolution + billions of…
The change in a line of descent over time
modern synthesis
The coherent understanding of the relationship between natura…
microevolution
Change below the species level. Change in allele frequencies…
22 terms
Population Evolution
Popultaion evolution encompasses what…
Genetic Drift
Gene variation increase over time due…
What is the difference in the source o…
1. Genetic Drift... 2. Gene Flow... 3. Nonrandom mating... 4. Mutation…
Random changes in gene variation in a population
Chance
In natural selection genetic variation results in adaptations…
Popultaion evolution encompasses what…
1. Genetic Drift... 2. Gene Flow... 3. Nonrandom mating... 4. Mutation…
Genetic Drift
Random changes in gene variation in a population
28 terms
Evolution of Population
Gene pool
Directional selection
Stabilizing selection
Disruptive selection
all genes, including all the different alleles, that are pres…
when individuals at one end of a distribution curve have high…
when individuals near the center of a distribution curve have…
natural selection that favors individuals at either extreme o…
Gene pool
all genes, including all the different alleles, that are pres…
Directional selection
when individuals at one end of a distribution curve have high…
30 terms
Population Evolution
Population evolution encompasses what…
Genetic Drift
What size population is most affected…
What process contributes to gene flow?
1. Genetic Drift... 2. Gene Flow... 3. Nonrandom mating... 4. Mutation…
Random changes in gene variation in a population
Small populations
Migration
Population evolution encompasses what…
1. Genetic Drift... 2. Gene Flow... 3. Nonrandom mating... 4. Mutation…
Genetic Drift
Random changes in gene variation in a population
21 terms
Evolution and Population
...change in species over a long perio…
...type of food available in that envi…
...individuals with traits better adap…
...DNA mutations
What is Evoltuionary Theory?
Darwin concluded that the beak shape in the finches he found…
Natural selection is the process by which
Darwin's ideas on natural selection included all of the follo…
...change in species over a long perio…
What is Evoltuionary Theory?
...type of food available in that envi…
Darwin concluded that the beak shape in the finches he found…
25 terms
Population Evolution
Misconceptions of Evolutions
Influences on Evolution
Non-inherited Variations
Sources of Genetic Variations
-individuals do not evolve, populations do... -We can examine mi…
-genetic variation is the representation of different phenoty…
-not all phenotypic variation is heritable... -many phenotypes a…
1) formation of new alleles... 2) Altering gene #/ position... 3) R…
Misconceptions of Evolutions
-individuals do not evolve, populations do... -We can examine mi…
Influences on Evolution
-genetic variation is the representation of different phenoty…
16 terms
evolution of populations
gene pool
relative frequency
single gene trait
polygenic traits
consists of all genes, including all the different alleles th…
the number of times that an allele occurs in a gene pool, com…
trait that is controlled by a single gene that two alleles
traits that are controlled by two or more genes
gene pool
consists of all genes, including all the different alleles th…
relative frequency
the number of times that an allele occurs in a gene pool, com…
25 terms
The Evolution of Populations
Gene Pool
Allele Frequency
Normal Distribution
Microevolution
combined alleles of all the individuals in a population
how common a certain allele is in the population
frequency is highest near the mean value and decreases toward…
observable change in the allele frequencies of a population o…
Gene Pool
combined alleles of all the individuals in a population
Allele Frequency
how common a certain allele is in the population
10 terms
Evolution and Populations
J curve
Limiting factor
abiotic factors
biotic factors
represents exponential growth
The "deal breaker" - if this abiotic or biotic factor is miss…
nonliving; examples would be oxygen, water, gases, sunlight,…
living; examples would be plants, animals, humans, etc...
J curve
represents exponential growth
Limiting factor
The "deal breaker" - if this abiotic or biotic factor is miss…
The Evolution of Populations
Gene Pool
Alllele frequency
Normal distribution
Microevolution
The combined alleles of all of the individuals in a population.
A measure of how common a certain allele is in the population.
A type of distribution in which a frequency is highest near t…
The observable change in the allele frequencies of a populati…
Gene Pool
The combined alleles of all of the individuals in a population.
Alllele frequency
A measure of how common a certain allele is in the population.
14 terms
Evolution of population
population
Gene pool
Allele frequency
Evolution
Group of organisms of the same species
All the genes that are present in a population
the number of times an allele occurs in a gene pool
change in frequency of alleles in a population over time
population
Group of organisms of the same species
Gene pool
All the genes that are present in a population
50 terms
Evolution & Populations
natural selection
• Wrote "On the Origin of Species"... • P…
binomial nomenclature
evolution
The accepted mechanism of evolution:... • Populations tend to gr…
Charles Darwin
• System of naming organisms developed by Carolus Linnaeus... •…
the change in frequency of alleles in a given population
natural selection
The accepted mechanism of evolution:... • Populations tend to gr…
• Wrote "On the Origin of Species"... • P…
Charles Darwin
45 terms
Evolution of Populations
How is genetic variation in population…
Population
Gene Pool
Relative (Allelic) Frequency of an all…
At a level of a population not the individual.
Group of individuals of the same species that live in the sam…
All of the genes that are present in a population;members of…
Number of times that the allele occurs in a gene pool compare…
How is genetic variation in population…
At a level of a population not the individual.
Population
Group of individuals of the same species that live in the sam…
26 terms
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
56 terms
Evolution and Population
What is a scientific theory?
What did Charles Darwin do to contribu…
What did Carl Linneaus contribute to t…
What did Thomas Malthus contribute to…
A widely accepted explanatory idea that is broad in scope and…
He used evidence to support his theory (the theory of evoluti…
The Father of taxonomy. Used binomial nomenclature, came up w…
Attempting to justify the conditions of the poor by stating t…
What is a scientific theory?
A widely accepted explanatory idea that is broad in scope and…
What did Charles Darwin do to contribu…
He used evidence to support his theory (the theory of evoluti…
45 terms
Evolution of Populations
Natural selection acts on ____________…
______________________ in heritable tr…
Variation comes from...
Genetic Varitation
Natural selection act on an individuals, but only populations…
Variation
Comes from Genes
differences among individuals DNA
Natural selection acts on ____________…
Natural selection act on an individuals, but only populations…
______________________ in heritable tr…
Variation
24 terms
Evolution of Populations
gene pool
allele frequency
normal distribution
microevolution
collection of alleles found in all of the individuals of a po…
proportion of one allele, compared with all the alleles for t…
distribution in a population in which allele frequency is hig…
observable change in the allele frequencies of a population o…
gene pool
collection of alleles found in all of the individuals of a po…
allele frequency
proportion of one allele, compared with all the alleles for t…
26 terms
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
15 terms
Evolution population
Gene pool
Gene flow
Divergent evolution
Bottleneck effect
Combine alleles of all the individual I'm a population
Movement of alleles from one population to another
Two species that are closely related become increasingly diff…
Genetic drift that occurs after an event greatly reduced the…
Gene pool
Combine alleles of all the individual I'm a population
Gene flow
Movement of alleles from one population to another
Population evolution
daphne major island (galapagos)
Microevolution
3 mechanisms causing allele frequency…
Genetic variation is caused by
During drough finches with larger beaks more likeley to crack…
Change in allele frequencies in a population over generations
1) natural selection... 2) genetic drift... 3) gene flow
1) DNA mutation... 2) change in gene location or duplication... 3)…
daphne major island (galapagos)
During drough finches with larger beaks more likeley to crack…
Microevolution
Change in allele frequencies in a population over generations
13 terms
Population evolution
population
microevolution
phenotypic plasticity
discrete characters
the smallest unit of evolution; a localized group of individu…
a change in allele frequencies in a population over generations
expression of different phenotypes in response to environment…
can be classified on an either-or basis
population
the smallest unit of evolution; a localized group of individu…
microevolution
a change in allele frequencies in a population over generations
14 terms
Evolution & Population
Genetic Drift
Founder Effect
Bottleneck Effect
Charles Darwin
A change in the allele frequency of a population as a result…
Genetic drift that occurs when a few individuals become isola…
Genetic drift resulting from the reduction of a population, t…
1809-1882 English naturalist and scientist whose theory of ev…
Genetic Drift
A change in the allele frequency of a population as a result…
Founder Effect
Genetic drift that occurs when a few individuals become isola…
29 terms
Population Evolution
Population
Microevolution
Phenotypic plasticity
Discrete characters
a localized group of individuals that are capable of interbre…
change in allele frequencies in a population over generations
the expression of different phenotypes in response to environ…
can be classified on an either-or basis
Population
a localized group of individuals that are capable of interbre…
Microevolution
change in allele frequencies in a population over generations
61 terms
Evolution/ population
Biological evolution
Darwin
Natural selection
Fossils
How earths life changes over time through changes in the gene…
Origin of species
Individual with certain traits are more likely to survive and…
Physical evidence of ancient organisms ... Reveal what their ext…
Biological evolution
How earths life changes over time through changes in the gene…
Darwin
Origin of species
25 terms
Population Evolution
Adaption
Adaptive Radiation
Behavioral Isolation
Macro Evolution
A characteristic that improves an individual's ability to sur…
The emergence of numerous species from one common ancestor in…
An evolutionary mechanism that helps members of the same spec…
Evolution on a large scale, this leads to the formation of ne…
Adaption
A characteristic that improves an individual's ability to sur…
Adaptive Radiation
The emergence of numerous species from one common ancestor in…
32 terms
Population evolution
Population
Gene pool
Relative frequency
A percentage
A group of individuals of the same species that can interbree…
What consists of all the genes present in a population includ…
What is the number of times that an allele occurs in the gene…
What is relative frequency often expressed as
Population
A group of individuals of the same species that can interbree…
Gene pool
What consists of all the genes present in a population includ…
21 terms
Population Evolution
Microevolution
3 mechanisms cause allele frequency ch…
Variation in ___ leads to variation in…
Genetic variation is caused by....
A change in allele frequencies in a pop. over generations
1. Natural selection... 2. Genetic drift... 3. Gene flow... *only natu…
Genotype. Phenotype ... *not all phenotypic variation is heritable
1. DNA mutation... 2. Change in gene location or duplication... 3.…
Microevolution
A change in allele frequencies in a pop. over generations
3 mechanisms cause allele frequency ch…
1. Natural selection... 2. Genetic drift... 3. Gene flow... *only natu…
58 terms
POPULATION EVOLUTION
Alfred Wallace
Charles Lyell
Jean Baptiste Lamarck
Thomas Malthus
created an almost identical theory to Darwin's
wrote "Principles of Geology" which inspired Darwin
proposed the idea of acquired traits
wrote about human suffering, human population is increasing f…
Alfred Wallace
created an almost identical theory to Darwin's
Charles Lyell
wrote "Principles of Geology" which inspired Darwin
74 terms
Evolution, Population
Evolution
Fossil record
Fossil record
Petrified fossils
gradual change in the inherited characteristics of biologic…
any preserved part or tissue of an organism that once lived
formed when substances in the soil replace the soft easily de…
formed when minerals in mud and sand replace the hard parts o…
Evolution
gradual change in the inherited characteristics of biologic…
Fossil record
any preserved part or tissue of an organism that once lived
37 terms
Population Evolution
Adaptation
Species
Evolution
Fossils
In a popoulation, favorable and heritable traits that allow o…
(biology) taxonomic group whose members can interbreed
change in heritable traits in a population over generations
suggest that species changed over time,
Adaptation
In a popoulation, favorable and heritable traits that allow o…
Species
(biology) taxonomic group whose members can interbreed
19 terms
Population Evolution
Genus
Species
Binomial nomenclature
Isotope
The usual major subdivision of a family or subfamily
The major subdivision of a genus or sub genus
Two terms used to denote a species
An element with different variations of the number of neutrons
Genus
The usual major subdivision of a family or subfamily
Species
The major subdivision of a genus or sub genus
24 terms
Evolution of Populations
natural selection
population
species
gene pool
Process by which individuals that are better suited to their…
A group of individuals that belong to the same species and li…
A group of similar organisms that can breed and produce ferti…
All of the alleles in all the individuals that make up a popu…
natural selection
Process by which individuals that are better suited to their…
population
A group of individuals that belong to the same species and li…
Evolution & Population
Charles Darwin
Jean-Baptiste Lamarck
Evolution
Theory
English naturalist. He studied the plants and animals of Sout…
he proposed that by selective use or disuse of organs, organi…
Change in a kind of organism over time; process by which mode…
A hypothesis that has been tested with a significant amount o…
Charles Darwin
English naturalist. He studied the plants and animals of Sout…
Jean-Baptiste Lamarck
he proposed that by selective use or disuse of organs, organi…
58 terms
POPULATION EVOLUTION
Alfred Wallace
Charles Lyell
Jean Baptiste Lamarck
Thomas Malthus
created an almost identical theory to Darwin's
wrote "Principles of Geology" which inspired Darwin
proposed the idea of acquired traits
wrote about human suffering, human population is increasing f…
Alfred Wallace
created an almost identical theory to Darwin's
Charles Lyell
wrote "Principles of Geology" which inspired Darwin
41 terms
Population Evolution
Natural selection acts on invidiuals w…
alleles code for ______
Directional selection
selection pressure
certain traits
traits
environment changes... a more extreme phenotype is favored
some aspect of the environment that reduces survival and repr…
Natural selection acts on invidiuals w…
certain traits
alleles code for ______
traits
20 terms
Evolution of Populations
Gene Pool
Allele Frequency
Single-Gene Trait
Polygenic Trait
All the genes, including all the different alleles for each g…
The number of times that an allele occurs in a gene pool comp…
Trait controlled by one gene that has two alleles
Trait controlled by two or more genes
Gene Pool
All the genes, including all the different alleles for each g…
Allele Frequency
The number of times that an allele occurs in a gene pool comp…
25 terms
Population Evolution
Gene pool
Gene frequency
Mutation
Recombination
Genetic variation stored in population
How often an allele shows up in a population
Random change in DNA
New allele combination forming in offspring (e.g. Meiosis / C…
Gene pool
Genetic variation stored in population
Gene frequency
How often an allele shows up in a population
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