Evolution
Evolution is:
Desecent without modification
Changes from one generation to the next
Changes in allele frequencies
A trait that can be passed down to the next generation
Descent explains:
A trait without modication
Inheritance, a trait that can be passed down
An allele
The mechanism of evolution
Modification is:
Descent from your parents
Genetic change in population
Changes from one generation to the next
All organsims are related in one way or another
When does evolution occur?
When genetic change in population over time
When the next generation has completely new alleles
When the current population is deceased
When the current population has new alleles
What are Darwin's two main points?
Modification and evolution
Ewolution and natural selection
Desenet and modification
Allele changes and natural selection
T/F: Alleles can change in an indiviual and a popluation
True
False
Microevolution is:
Small changes in alleles
Changes in the gene pool within one population
Generation to generation change in the gene pool
Changes in the genes from one generation
Natural selection is:
The mechanism of evolution
The way we get our genes
Changes from one generation to the next
Variation and heritability
Gene pools are:
A population's genes
How many times the alleles occur
All the genes humans posses
Exist becuase of evolution
Natural selection explains:
How many times the allele occurs in a population
How the next generation will survive
Is a mechanism for the generations to evolve
Which variations are most likely to survive
T/F: Thru microevolution, species can adapt to the local enviorment with gradual adaptations.
True
False
Darwin fitness explains:
How many adaptations can improve over time
How many offspring one contributed too
How the alleles change to adapt to the enviornment
How natural selection changes from generation to generation
What is the most important mechanism of evolution?
Changes in alleles
Natural Selection
Genetic changes
Limited resources
What are the three modes of natural selection?
Mechanism, directional and evolution
Variation, competition and stabilizing
Disruptive, mechanism and over production
Directional, disruptive and stabilizing
Directional selection is:
One extreme phenotype is the most fit and the environment selects against other phenotypes
Two or more extreme phenotypes are more firt than other indiviuals
Disruptive and diversifying
Contains two or more phenotypes
An example of directional selection is:
The gray wolf eating all the white rabbits
Rise of antibiotic resistance
Two or more dominant phenotypes join
Limited resources to a certain population
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