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How does genetic variation contribute to biodiversity? |
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3. Student Learning Map
- Topic:08- Heredity
- Subject(s):Science
- Days:18
- Grade(s):9
Key Learning:
Mendel's Laws of Genetics explain the basic principles of genetics. Modern technology has lead to a greater understanding of the complexity of genetics.
Unit Essential Question(s):
Concept: Mendelian Genetics
Explain the difference between a gene and a allele.
Distinguish between dominant and recessive alleles. Identify the relationship between dominant alleles, recessive alleles, phenotypes and genotypes. Utilize the terms heterozygous and homozygous during your discussion. Explain that a capital letter is used to indicate a dominant trait and a lower case letter is used to indicate a recessive trait.
Describe Mendel's Law of Segregation and Law of Independent assortment.
Predict genotypes and phenotypes of offspring using Mendel's laws. Use Punnett squares to predict genotypic and phenotypic ratios for monohybrid and dihybrid crosses in a F1 and a F2 generation.
HOTS: Deductive Reasoning, Inductive Reasoning or Error Analysis could be used to demonstrate the ET LEQs.
Concept: Chromosomes and Inheritance
Describe the relationship between genes and chromosomes.
Explain the pattern of inheritance observed when genes are linked. Discuss how codominant, sex-linked, polygenic and multiple alleles impact inheritance patterns.
Explain how the crossing over that occurs during meiosis affects inheritance patterns and contributes to the diversity of a population.
HOTS: Comparing/Contrasting, Deductive Reasoning and Inductive Reasoning could be used to demonstrate the ET LEQ.
Concept: Mutations
Identify the causes of genetic disorders (chromosome mutations) including deletion, inversion, translocation and nondisjunction.
Identify the causes of gene mutations including point mutation, substitution, frameshift mutation and insertion mutations.
Give examples of genetic disorders (table 12-1), describe how they occur (pattern of inheritance), the symptoms associated with each disorder and the chromosome location. Discuss the frequency of each disorder.
Describe the methods physicians use to detect chromosome abnormalities during pregnancy. Discuss the use of an amniocentesis, karotypes and chorionic villi sampling.
Lesson Essential Question(s):How are Mendel's laws useful in predicting future patterns of inheritance?
(A)How do we use Punnett Squares to predict the possible genotypes and phenotypes of F1 and F2 generations?
(A)How do dominant and recessive alleles work together to contribute to genetic diversity?
(ET)Vocabulary:Concept: DNA Technology
Describe applications of DNA technology including restriction digestion by endonucleases, gel electrophoresis, polymerase chain reaction, ligation and transformation. Emphasize their relationship to DNA cloning.
Discuss gene therapy, vaccines and genetically modified crops. Discuss specific examples where each of these DNA technologies are used.
Recognize the impact that DNA technology has on our society and on the environment. Examine the pros and cons of using DNA technology. Discuss bioethics and how they impact genetic research. Explain the importance of the human genome project.
HOTS: Analyzing Perspectives or Constructing Supporting could be used to demonstrate the ET LEQs.
Concept: Concept: Lesson Essential Question(s):What is the relationship between various applications of DNA technology and DNA cloning?
(A)What influence does society have on applications and advances in DNA technology?
(A)How does DNA technology impact the future?
(ET)Lesson Essential Question(s):Lesson Essential Question(s):
Additional Information:
The asterisk (*) next to the vocabulary term above indicates FCAT vocabulary.
Refer to Holt Modern Biology textbook chapter 9, 11-13 and ancillary materials.
GIZMOS: "Chicken Genetics", "Mouse Genetics (One Trait)", "Human Karyotyping", "Inheritance"
