Genetics and Molecular Biology
Botany Major, Semester V BT 502C Unit I Genetics-I 1 Mendelian Genetics: Principles of segregation and independent assortment,concept of Dominance, Incomplete dominance, Codominance, Multiple allele, Penetrance, Expressivity, Pleotropism, Phenocopy effect and Atavism. 2. Determining allelism of mutants Complementation test, Definition of Cistron,Muton & Recon, Concept of pseudoallele, Fine structure of gene -- structure of phase rII locus. 3. Gene interactions with modified dihybrid ratios 12:3:1 9:7 9:4:3 9:6:1 13:3 15:1 Unit II Genetics -II 1. Cytoplasmic Inheritance :- Features, Plastid inheritance - leaf colour in Mirabilis jalapa, Mitochondrial inheritance -:Poky &Petite mutation, Maternal effect - shell coiling in snail. 2. Linkage :- Definition of complete linkage & incomplete linkage, coupling phase, repulsion phase, linked group, Crossing over :- definition and cytological basis of crossing over ( Creigton & McClintock Experiment). 3. Recombi...
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