CHSE Biology Heredity And Variation (Genetics) Important Short Notes For 2021 Board Exam Suman Panda 01-04-2021 3 Comments Unit – Genetics and Evolution Chapter – Heredity and Variation Hybridization Monohybrid cross Dihybrid cross Principle of dominance Principle of independent assortment Principle of segregation Back cross and test cross Incomplete dominance / explain incomplete dominance through checkerboard method / give an example of incomplete dominance Co-dominance Multiple alleles Inheritance of blood groups Pleiotropy Polygenic inheritance Qualitative inheritance Quantitative inheritance Chromosomal basis of inheritance Chromosome and genes / function of genes Linkage Crossing – over Genotype and phenotype Recombination Homozygous and heterozygous Dominant and recessive genes What are the seven pairs of contrasting characters taken by Mendel for his experiment? Why he chooses pea plants for his experiment? Short notes on alleles / main features of alleles What do you understand by pure line or true breeding? Explain the law of dominance by monohybrid cross. What is point mutation? Give one example. Genotype of A, B, AB and O blood groups. If allele for tallness (TT) is dominant and dwarfness (tt) is recessive, then a cross between ______, 50% of the offspring will be dwarf. TT x tt Tt x tt tt x tt Tt x Tt 31. Numerical / problems like question number 30.