RVHS 16. Inheritance 9477

River Valley High School 2025 JC1 H2 Biology Lecture Topic 16: Inheritance 1 River Valley High School 2025 JC1 H2 Biology Lecture Topic 16: Inheritance Name: ( ) Class: 25J___ Date: References Title Authors Biology (8th Edition) Campbell and Reece Biological Science 1 and 2 (3rd Edition) Green, Stout and Taylor Principles of Genetics Gardner, Simmons, Snustad An Introduction to Genetic Analysis (7th Edition) Griffiths, Miller, Suzuki, Lewontin and Gelbart Websites URL Description https://knowgenetics.org/mendelian-genetics/ Mendelian Genetics http://www.dnaftb.org/dnaftb/1/concept/ Animation on Mendel’s experiment H2 Biology Syllabus 9477 (2025) Candidates should be able to use the knowledge gained in the following section(s) in new situations or to solve related problems. Related Topics Content The Cell Cycle The Structure of Nucleic Acids and Gene Expression • Replication and division of nuclei and cells • Understanding of chromosome number and variation • Effect of meiosis on chromosome number and variation • Central Dogma - DNA to RNA, RNA to protein Learning Outcomes 2F. Inheritance a. Explain the terms: locus, allele, dominant, recessive, codominant, homozygous, heterozygous, phenotype, genotype and linkage. b. Explain how genes are inherited from one generation to the next via the germ cells or gametes. c. Explain how genotype is linked to phenotype. d. Use genetic diagrams to solve problems in dihybrid crosses, including those involving codominance, multiple alleles, sex linkage, autosomal linkage and epistasis. e. Use genetic diagrams to solve problems involving test crosses. f. Explain the meaning of the terms linkage and crossing -over and explain the effect of linkage and crossing-over on the phenotypic ratios from dihybrid crosses. g. Describe the interaction between loci (epistasis) and predict phenotypic ratios in problems involving epistasis. (Knowledge of the expected ratio for various types of epistasis is not required; focus of this section is on problem solving.) h. Explain how the environment may affect the phenotype, using examples including the effect of diet on differentiation of honeybees. i. Explain the difference between genetic variation that is continuous (many, additive genes control a characteristic) and genetic variation that is discontinuous (one or a few genes control a characteristic).

River Valley High School 2025 JC1 H2 Biology Lecture Topic 16: Inheritance 2 j. Use the chi -squared test to test the significance of differences between observed and expected results. Lecture Outline I. Introduction A. Terminology B. Inheriting genes in sexual reproduction C. How genotype is linked to phenotype? D. Mendel’s experiment II. Monohybrid Crosses and Principle of Segregation A. Representing monohybrid cross in symbols B. Explanation of monohybrid cross in term of probability C. Testcross D. Monohybrid inherita