Biology
Fourth Six Weeks Student Expectations (TEKS)
7C(S) Analyze and evaluate how natural selection produces change in populations, not individuals.
 Population, adaptation, fitness, natural selection, directional selection, stabilizing selection, disruptive selection
1. How does a population change over time?
2. What is an adaptation?
3. How are adaptations beneficial to individuals?
4. How does an adaptation become more prevalent in a population?
5. How does natural selection occur?
6. Be able to interpret a graph for the following types of selection: directional, stabilizing, disruptive.
7D(S) Analyze and evaluate how the elements of natural selection, including inherited variation, the potential of a
population to produce more offspring than can survive, and a finite supply of environmental recourses, result in
differential reproductive success.
 Limited (finite) resources, inherited variation, migration, reproductive success
1. How is frequency of alleles related to environmental conditions?
2. Can individuals in a population be genetically different? Explain.
3. How can migration affect populations?
4. What is natural selection?
5. Explain how natural selection affects population.
6. Explain how some adaptations give individuals a reproductive advantage.
7. What is inherited variation? How does it change in a population over time?
8. What are some limiting resources?
9. Why do some individuals have more reproductive success than others in a population?
10. How can environmental pressures affect the change in population?
11. When a population produces more offspring than can survive, the surviving offspring reproduce. How does this
affect a population?
7E(R) Analyze and evaluate the relationship of natural selection to adaptation and to the development of diversity in
and among species.
 Speciation, reproductive isolation, geographic isolation, behavioral isolation, temporal isolation, genetic diversity
1. How does an organism’s genes determine its adaptation?
2. Explain the relationship between natural selection and adaptation.
3. What does diversity in a species mean?
4. Explain the relationship between natural selection and the development of diversity in a species.
5. Explain speciation.
6. What is reproductive isolation? Give an example.
7. What is geographic isolation? Give an example.
8. What is behavioral isolation? Give an example.
9. What is temporal isolation? Give an example.
10. How do changes in the environment affect the genetic variation within a species?
11. List some factors that need to exist for speciation to occur.
9D(S) Describe the evidence regarding the formation of biomolecules essential to life.
 Aerobic, anaerobic, amino acids, proteins
1. Review how monomers and polymers are formed and broken down.
2. Describe the Urey-Miller experiment (in detail).
3. Draw and label a diagram of their experimental setup.
4. What was the conclusion of the Urey-Miller experiment? What molecule was formed? Why was this significant?
5. What new evidence do we have about Miller and Urey’s findings?
7A(R) Analyze and evaluate how evidence of common ancestry among groups is provided by the fossil record,
biogeography, and homologies including anatomical, molecular, and developmental.
 Fossil, Biogeography, homologous structure, vestigial structure
1. What is common ancestry?
2. What are the major groups of organisms on Earth?
3. How does the fossil record provide evidence of common ancestry among groups?
4.
5.
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How does biogeography provide evidence of common ancestry among groups?
What are anatomical homologies?
What do homologous structures tell about different species?
What do molecular homologies tell about different species?
How does a developmental homology show similarities between organisms?
7B(S) Analyze and evaluate scientific explanations concerning any data of sudden appearance, stasis, and sequential
nature of groups in the fossil record.
 Index fossil, Gradualism. Punctuated equilibrium, adaptive radiation, Stasis
1. Why do scientists use index fossils?
2. What is adaptive radiation?
3. What does a sudden appearance in the fossil record demonstrate?
4. What is the difference between gradualism and punctuated equilibrium?
5. What is stasis in the fossil record? Give an example of a species that demonstrates stasis.
7F(S) Analyze and evaluate the effects of other evolutionary mechanisms, including genetic drift, gene flow, mutation,
and recombination.
 Genetic drift, bottleneck effect, founder’s effect, gene flow, recombination (gene shuffling)
1. How does genetic drift affect evolution of species?
2. How does gene flow affect evolution of a species?
3. How do mutations and recombination affect evolution?
7G(S) Analyze and evaluate scientific explanations concerning the complexity of the cell.
 Endosymbiosis (endosymbiotic theory), mitochondria, chloroplast
1. What do scientists think ancient cells were like?
2. Explain the endosymbiotic theory.
3. Explain the evidence for the endosymbiotic theory.
8A(S) Define taxonomy and recognize the importance of a standardized taxonomic system to the scientific community.
 Taxonomy, Binomial nomenclature, Kingdom, Phylum, Class, Order, Family, Genus, Species
1. What is taxonomy?
2. What is the genus species name for a human?
3. Why is a standardized taxonomic system important to the scientific community?
4. How has taxonomy changed over time?
8B(R) Categorize organisms using a hierarchical classification system based on similarities and differences shared
among groups.
 Cladogram, derived character, clade, dichotomous key
1. How do scientisits catergorize organisms?
2. What is a cladogram?
3. Be able to read cladogram & answers questions.
4. What is a dichotomous key?
5. Be able to use a dichotomous key to “key out” organisms.
8C(S) Compare characteristics of taxonomic groups including archaea, bacteria, protists, fungi, plants and animals.
 Domain, kingdom, bacteria, archaea, protest, fungi, plant, animal
1. What are the 3 domains & 6 kingdoms?
2. What are the characteristics of organisms in EACH of the kingdoms?
3. What are the similarities between organisms in the different kingdoms?
4. What are the differences between organisms in the different kingdoms?
Unit 9 Exam
7C, 7D, 7E
Date:
Unit 10&11 Exam
9A, 7A, 7B, 7F, 7G
Date:
Unit 12
8A, 8B, 8C
Date:
Grade:
Grade:
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