This video provides a complete explanation of the Neighbor Joining (NJ) method, one of the most widely used distance-based phylogenetic tree construction algorithms. Learn how to compute the Q-matrix, select neighbor pairs, recalculate distances, and construct an additive tree efficiently.
🔍 Topics Covered:
• What is the Neighbor Joining method?
• Difference between UPGMA and NJ
• Mathematical background and assumptions
• Step-by-step NJ algorithm
• Creating the Q-matrix
• Reconstructing trees using distance matrices
• Worked numerical example
• Applications in molecular evolution & bioinformatics
🎓 Useful For Students of:
Bioinformatics, Biotechnology, Genetics, Evolutionary Biology, Computational Biology, BSc/MSc Life Sciences, GATE, CSIR-NET, DBT exams, and university courses.
📘 Keywords Included:
Distance matrix, phylogeny, Q-matrix, additive trees, sequence analysis, evolutionary distance, clustering method.
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