Unit 6 · Genetics

A/L Biology

• Genetics terms and the monohybrid cross
• The dihybrid cross and the reasons for Mendel's success
• Probability rules and the test cross
• Human Mendelian traits and pedigree analysis
• Non-Mendelian inheritance: incomplete dominance, codominance and multiple alleles
• Epistasis, polygenic inheritance, pleiotropy and epigenetics
• Gene linkage
• Human sex determination and sex-linked traits
• Population genetics: the Hardy–Weinberg equilibrium
• Plant and animal breeding: importance and breeding techniques
• Genetic principles in breeding and the pros and cons of artificial breeding