Biology
Third Six Weeks Student Expectations (TEKS)
6F (R) Predict possible outcomes of various genetic combinations such as monohybrid crosses, dihybrid crosses,
and non-Mendelian inheritance.
 Fertilization, trait, hybrid, gene, allele, segregation, gamete, homozygous, heterozygous, phenotype, genotype,
independent assortment, incomplete dominance, codominance, multiple alleles, polygenic traits, blood types, sexlinked
1. Set up a Punnett square for both monohybrid and dihybrid (two-factor) crosses.
2. Use a Punnett square to predict probabilities of gentoypes and phenotypes.
3. What is the difference between incomplete and codominance?
4. Give an example of incomplete dominance, codominance, and multiple alleles.
5. Create a Punnett square for a blood type problem and use it to predict genotypes and phenotypes of offspring.
6. Explain how a blood type is an example of both codominance and multiple alleles.
7. Explain how a mother can be a carrier of a disease.
6H (S) Describe how techniques such as DNA fingerprinting, genetic modifications, chromosomal analysis are used
to study the genomes of organisms.
 Gel electrophoresis, genetic engineering, recombinant DNA, plasmid, transformation, karyotype, sex
chromosome, autosome, nondisjunction, DNA fingerprinting, Human Genome Project, restriction enzymes,
pedigree, chromosomal analysis (painting)
1. Describe how gel electrophoresis works.
2. Analyze a DNA electrophoresis gel by comparing bands.
3. What is a restriction enzyme and how is it used in electrophoresis?
4. How is a karyotype constructed?
5. What does a normal human karyotype look like?
6. Predict what disorder(s) an individual has by analyzing a human karyotype.
7. Determine the genotype of each individual in a pedigree.
8. What is the purpose and method of the Human Genome Project?
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.
Unit 6 Exam
6F, 6H
Date:
Unit 7 Exam
7C,7D,7E
Date:
Grade:
Grade: