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A great video lecture conducted by experienced biology teacher on 12th class biology chapter 22 topic1 introduction chapter 22. Get full understanding or ask any questions.

Introduction Chapter 22, ch 22, lec 1, Introduction Chapter 22 - Inter Part 2 Biology

7:57

Genes,Allele and Gene Pool, ch 22, lec 1, Introduction Chapter 22 - Inter Part 2 Biology

9:11