Question

Describe in detail the lytic and lysogenic pathways of the bacteriophage virus. What are the advantages and disadvantages (for the virus) of each pathway?

Answer 1

lytic pathway

1. the phage infects the cell/host

2.phage dna seperately occuring and circularize from the host dna.

3.phage dna replicates. as a result proteins are made and new phage particles are started to evolve.

4. the cell lyses and by bursting of the cell phages released to the adjacent cells.

this cycle will be active when the lysogenic cycle remain silent. it is used in warfares as a biological weapon. it killls susceptible competitors.

lysogenic pathway

1. the phage infectss the cell/ host

2.the pgahe cell is incorporating with the host dna genome.

3.when the cell divides the prophage dna is transferred to the offspring daughter dna.

4.when there is a stress condition phage can release from the genome and enter to the lytic cycle.

it helps to spread rapidly by cell divisions. it is more dangerous due to the incorporation of the host cell during infection