Mendelian Genetics
Gregor Mendel, in his experiments breeding pea plants for specific characteristics, determined inheritance patterns found in many traits coded within the DNA of living organisms. Within this unit, students will become familiar with patterns such as simple dominance, codominance, incomplete dominance, and sex-linked. Punnett squares will be used to predict the phenotypic ratio that the offspring of two known parents wil produce. A few examples of non-Mendelian inheritance traits will also be given. Finally, students will connect these inheritance patterns to the behavior of chromosomes as they duplicate, cross over, and independently assort themselves in meiosis.
Mendelian Genetics Powerpoint Lecture
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Purpose: This Powerpoint will give students all the tools and concepts needed to navigate through any genetic cross involving Mendelian inheritance patterns. Students will differentiate between dominant and recessive traits, then use laws of probability to predict the results of different genetic crosses. Examples of simple dominant, sex-linked, and other human traits will be used to illustrate these ideas. The concept of testcrosses and pedigrees is also used to help students analyze genetic patterns within an entire family.
Essential Concepts: Genetics, heredity, Gregor Mendel, hybridization, dominant traits, recessive traits, genes, chromosomes, DNA, alleles, locus, Punnett square, homozygous, heterozygous, phenotype, genotype, testcross, law of segregation, monohybrid cross, dihybrid cross, law of independent assortment, probability, complete dominance, incomplete dominance, multiple alleles, codominance, pleiotropy, epistasis, polygenetic inheritance, pedigree, sex-linked trait.
Mendelian Genetics Lecture Notes Outline
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Purpose: Taking efficient notes can be a big challenge for many students, especially when working from a Powerpoint lecture. This outline gives students a means to take notes that guides them toward important concepts and avoids the pitfalls of writing word-for-word or simply not taking notes at all. The outline is written as a series of questions, fill-in-the-blanks, or diagrams.
Essential Concepts: Genetics, heredity, Gregor Mendel, hybridization, dominant traits, recessive traits, genes, chromosomes, DNA, alleles, locus, Punnett square, homozygous, heterozygous, phenotype, genotype, testcross, law of segregation, monohybrid cross, dihybrid cross, law of independent assortment, probability, complete dominance, incomplete dominance, multiple alleles, codominance, pleiotropy, epistasis, polygenetic inheritance, pedigree, sex-linked trait.
Inheritance and Punnett Squares Practice Worksheet
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Purpose: Predicting patterns of inheritance with Punnett squares is one of the most fundamental skills of the genetics unit. This worksheet has students use Punnett squares to predict the phenotypes and genotypes of offspring from a variety of different types of crosses, including simple dominant, dihybrid, codominance, incomplete dominance, and sex-linked.
Essential Concepts: Punnett square, phenotype, genotype, dominant, recessive, allele, incomplete dominance, codominance, dihybrid, monohybrid, polygenic, sex-linked.
Mendelian Genetics Study Guide
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Purpose: This worksheet is a set of vocabulary words and practice questions meant to encourage students to condense their notes into a more manageable form to study from. The questions and vocabulary are taken directly from the lecture Powerpoint for this unit.
Essential Concepts: Cell division, chromosomes, chromatin, DNA, mitosis, interphase, prophase, metaphase, anaphase, telophase, centrioles, spindle fibers.
