Open Question
How would mutations that inactivate each of the following genes affect the determination of the lytic or lysogenic life cycle in mutated λ phage strains? Explain your answers.int
12. Gene Regulation in Prokaryotes
Lambda Bacteriophage and Life Cycle Regulation
Struggling with Genetics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In which of the following life cycles does a bacteriophage integrate itself into the host genome?
A
Lysogenic cycle
B
Integrative cycle
C
Lytic cycle
D
Subdue cycle
Verified step by step guidance1
Understand the life cycles of a bacteriophage: Bacteriophages can undergo two main types of life cycles: the lytic cycle and the lysogenic cycle.
In the lytic cycle, the bacteriophage takes over the host cell's machinery to replicate its own genetic material, eventually causing the host cell to burst (lyse), releasing new phage particles.
In the lysogenic cycle, the bacteriophage integrates its genetic material into the host cell's genome, becoming a prophage. This integrated state allows the phage DNA to be replicated along with the host cell's DNA without destroying the host.
Recognize that the term 'integrate' is key to identifying the lysogenic cycle, as this is the cycle where integration into the host genome occurs.
Eliminate the other options: The 'Integrative cycle' is not a standard term in bacteriophage life cycles, and the 'Subdue cycle' is not a recognized cycle. The lytic cycle does not involve integration into the host genome.
4:29mWatch next
Master Bacteriophage Life Cycle with a bite sized video explanation from Kylia
Start learningRelated Videos
Related Practice
Lambda Bacteriophage and Life Cycle Regulation practice set
Problem sets built by lead tutorsExpert video explanations