Table of contents : 00:00 Intro 00:55 Monohybrid cross for writing Forked line 02:13 F2 Phenotypic Ratio in Trihybrid cross using forked line method 02:43 Application of Multiplication rule in probability to predict ratios 04:15 F2 Genotypic Ratio in Trihybrid cross following forked line method 07:00 Example Problems in Genetics ( Trihybrid crosses in pea plant ) Keeping track of phenotypes and genotypes of offsprings in a trihybrid cross is a challenging task. This is either done with the help of a checkerboard - Punnet square or the branching method called the Forked line method (or just Fork line method). The forked line method makes the tracking of offsprings and their details easy when compared to punnet square. This is the best alternative as it saves time and avoids confusion. One can predict the proportions of progeny formed by following rules of probability. So, to guess the phenotypic and genotypic ratios, knowledge of monohybrid cross and basics of probability are enough. Learn the tricks of answering questions from Genetic crosses in a short time by watching this video. Few example problems are solved at the end of the video for better understanding. In NCERT class 12 Biology textbook, the dihybrid cross in the pea plant is not represented in the forked line method. But CBSE students who wish to crack the NEET exam, have to master this method to save time in exams and get accurate answers. Students are advised to practice this with different combinations of non-linked traits in a Pisum sativum and also with different genotypes. Video -- Forked line method in Dihybrid cross of a pea plant. https://youtu.be/LqpLUhzd2BU References: 1. Principles of Genetics, 8th Ed, by Gardner, M.J. Simmons, D.P. Snustad 2. Solving problems in Genetics, by Richard Kowles 3. Genetics, 3rd Ed, Monroe. W. Strickberger Music Credits: YT Audio Library #forkedline #Branchlinediagram #Geentics #NEET