Evidence of Evolution
Evidence of Common Ancestry
Mechanisms of Evolution
Speciation
Natural Selection
100
A change in the gene pool of a population over a period of time.
Evolution.
100
The most common ancestor of species 3 & 4
What is C?
100
What are 5 mechanisms of Evolution?
Mutation, gene flow, genetic drift, non-random mating, and natural selection
100
The formation of new species
What is Speciation?
100
Architect of the theory of Evolution by natural selection
Who is Charles Darwin?
200
What are the 4 types of evidence for evolution?
Fossil records, homologies, biogeography and molecular evidence.
200
An ancestral group of organisms that is shared by multiple lineages
What is a common ancestor
200
Alleles change when a mutation arises and when natural selection acts or leaving a population
What is a gene pool?
200
Explain the difference between punctuated equilibrium and gradualism
Gradualism is a steady rate of change while punctuated equilibrium is a period of rapid change followed by no change
200
How does natural selection work?
Organisms in a population who are well-adapted to a particular set of environmental conditions have an advantage over those who aren’t so adapted
300
What is relative dating in the fossil record?
Older rock and fossils will settle farther below the earth's surface helping us to determine the age of fossils.
300
Fossils, anatomy, embryos, and DNA sequences provide evidence in what?
What is common ancestry
300
What are the two types of rates in Evolution?
Gradualism and punctuated equilibrium
300
What are 2 patterns in evolutionary models?
Gradualism, Punctuated Equilibrium
300
Darwin described his theory of natural selection as what?
Descent with modification
400
How are vestigial structures an example of evolution?
Vestigial structures are often homologues to organs in other species therefore organisms with vestigial structures most likely have a common ancestor.
400
The human arm and wing of the bat where they have the same bones but different functions is an example of what?
What is homologous structures
400
This mechanism has movement of alleles into or out of a population due to migration of individuals
What is gene flow?
400
What are 3 factors needed for speciation?
Isolation, natural selection, and genetic drift
400
Why might natural selection cause different populations of birds to develop differently shaped beaks
It will allow them to eat different foods
500
How can you use Biogeography to prove that Evolution occurred?
Biogeography can be used as evidence for evolution by showing how the same species will evolve differently based on their location.
500
When all vertebrate embryos, from humans to chickens to fish, have a tail during early development, even if that tail does not appear in the fully developed organism what is this an example of?
What is embryology
500
How do homologous structures support the theory of Evolution?
Homologous structures provide evidence for common ancestry
500
What drives speciation?
Speciation can be driven by evolution which is a process that results in many small genetic changes called mutations in a population over a longer period of time
500
What is one of Charles Darwin’s theories about Evolution & natural selection, known as descent with modification
New species that appear in the fossil record are descendants of older species