This video lecture from Variety of Life (F.Sc. first year Biology) covers the structure of Bacteriophage virus and its life cycles i.e. Lytic Cycle and Lysogenic Cycle. A detailed explaination of the lytic and lysogenic process inside bacterium and creation of new replicas is a part of this this video.. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.