Natural Selection (I)
Natural Selection (II)
Patterns of Evolution
Evidence of Evolution
Phylogeny
100
____________________ is described as a change in inherited traits in a population of organisms over time.
Evolution
100
Draw and label the three modes of selection.
100
When an organism completely dies out.
What is Extinction?
100
Identify two types or fields of science that could be used as evidence of evolution?
Paleontology, biochemistry, biogeography, morphology, and embryology.
100
What are phylogenetic trees/cladograms used for?
They are used to show evolutionary relationships between different organisms.
200
Look at the photo and identify which condition of Natural Selection does it represent AND why.
Variation because it shows butterflies can have wings that are different shapes, sizes, and colors!
200
In terms of the HWE, what do p and q represent?
p - dominant allele
q - recessive allele
200
If a population were to become separated or geographically isolated for a long period of time, this may lead to new species. What pattern is this?
Speciation
200
Some organisms evolve with structures that no longer serve a purpose or have no apparent function. These structures are called...
Vestigial structures
200
Looking at the cladogram, which trait does the lynx possess but the lizard does not?
Hair
300
What is it called if an organism or a population changes to become better suited to their environment in order to survive and reproduce?
Adaptation
300
In regard to evolution, what does "fitness" mean?
Fitness refers to how well you ca survive and reproduce in an environment.
300
Which type of pattern of evolution describes number of different species arise from one common ancestor.
Divergent Evolution
300
What vocabulary word best fits the descriptions below?
(1) Organisms who've evolved from a common ancestor will have similar structures but different functions.
(2) When unrelated organisms with no common ancestors have structures with the same functions.
(1) Homologous structures
(2) Analogous structures
300
Looking at the cladogram, what do ALL the organisms have in common?
They are all Eukaryotes.
400
Which of the following IS a principle of Natural Selection?
A. Resources are readily available which mitigates competition in a population
B. Organisms overproduce offspring which causes competition for limited resources
C. Organisms have undifferentiated phenotypes in the population
D. All individuals in a population have the fitness to survive in their habitats
B. Because organisms do overproduce which causes competition.
400
If there are no mutations, no migration, random mating occurs, a large population occurs, and natural selection does not happen, what formula would you use to solve for their frequencies.
HWE!
p2 + 2pq + q2 = 1
400
What is convergent evolution? Give an example!
When unrelated species evolve similar characteristics because they live in similar environments.
- Bats and whales have echolocation
- Butterflies and birds have wings to fly
400
Explain why is it possible for a human to have DNA that is 48% similar to a rhino, but not be directly related.
It's because all living things share and are built from the same genetic information, which includes: genes, amino acids, and proteins.
400
Based on the amino acid differences, identify:
(1) The out group species AND how you know.
(2) The two species who would most likely be closely related AND how you know.
(1) Species A because it has the MOST differences when compared to the other species.
(2) Species B and C because those two species only have 3 amino acid differences.