Akm bio-gyani : biology teacher blogs

 CBSE Class 12 Biology Revision Notes Chapter 5 Principles of Inheritance and Variation Genetics Genetics is the study of principles and mechanism of heredity and variation. Gregor Johann Mendel is known as ‘father of Genetics’. Inheritance  Inheritance is the process by which characters are passed on from parent to progeny. It is the basis of heredity. Variations Variation is the degree by which progeny differ from their parents. Variation may be in terms of morphology, physiology, cytology and behavioristic traits of individual belonging to same species. Variation arise due to- -Reshuffling of gene/chromosomes. -Crossing over or recombination -Mutation and effect of environment. Mendel’s Law of Inheritance:  Mendel conducted hybridization experiments on garden pea (Pisum sativum) for seven years and proposed the law of inheritance in living organisms. Selection of pea plant:  The main reasons for adopting garden pea (Pisum sativum) for experiments by Me...