A bacterium carrying a dormant phage inserted in the chromosome is called a __________.
A bacterium carrying a dormant phage inserted in the chromosome is called a __________. 16. Bacteriophage T4 blocks transcription of host genes using an enzyme that transfers an ______ from NAD onto the alpha subunit of RNA polymerase. A bacterium carrying a dormant phage inserted in the chromosome is called a __________. 16. Bacteriophage T4 blocks transcription of host genes using an enzyme that transfers an ______ from NAD onto the alpha subunit of RNA polymerase. 17. __________ is an unusual base found in the DNA of T-even phages. A bacterium carrying a dormant phage inserted in the chromosome is called a __________. 16. Bacteriophage T4 blocks transcription of host genes using an enzyme that transfers an ______ from NAD onto the alpha subunit of RNA polymerase. 17. 15. A bacterium carrying a dormant phage inserted in the chromosome is called a __________. 16. Bacteriophage T4 blocks transcription of host genes using an enzyme that transfers an ______ from NAD onto the alpha subunit of RNA polymerase. A bacterium carrying a dormant phage inserted in the chromosome is called a __________. 16. Bacteriophage T4 blocks transcription of host genes using an enzyme that transfers an ______ from NAD onto the alpha subunit of RNA polymerase. 17. __________ is an unusual base found in the DNA of T-even phages. 18. In the other population of cells, the injected phage chromosome turns OFF all the phage genes except one. The single phage chromosome called the prophage now becomes a part of the host chromosome. The bacterium carrying the dormant phage chromosome is called the lysogen. – The inserted phage DNA is called a prophage. – Most prophage genes are inactive. – Environmental signals can cause a switch to the lytic cycle, causing the viral DNA to be excised from the bacterial chromosome and leading to the death of the host cell. In the Lysogenic cycle – chromosome Viral DNA is inserted into the host chromosome by recombination. – Viral DNA is duplicated along with the host chromosome during each cell division. – The inserted phage DNA is called a prophage. – Most prophage genes are inactive. The integrated phage DNA is called a prophage, and the bacterium is now a lysogen. Phage that do this are lysogenic. Induction of the lysogen will result in excision of the prophage and multiplication to produce many progeny, i.e. it enters a lytic phase in which the bacteria are broken open and destroyed. prophage. the latent stage of a bacteriophage in a lysogenic bacterium, in which the viral genome becomes inserted into a specific portion of the host chromosome and is duplicated into each cell generation.
Lysogen