(a) A retrovirus inserts its RNA into the cel: the wiral RNA undergoes Viral RNA reverse transcription and inserts into the host chromosome nest to a protooncogene. Reverse transcription Host chromosome Provirus Proto oncogene Viral reproduction When the virus reproduces, the proto-oncogene is incorporated into the virus In repeated rounds of viral infection and Repeated rounds of infection and reproduction, the proto-oncogene becomes rearranged or mutated or both. reproduction Viral RNA Reverse transcription producing an oncogene that inserted back into the hast chromosome. Host chromosome Mutation Provirus Oncogene (b) A retrovirus infects a cell... 2.and the provirus 3 The strong viral promoter stimulates over- expression of the inserts near a proto-oncogene. proto-oncogene. Strong viral promoter Provirus / Proto-oncogene Over- expression MRNA 23.14 Retroviruses can cause cancer by (a) mutating or rearranging proto- oncogenes or (b) inserting strong promoters near proto-oncogenes.

Q: What is a retrovirus and how does information flow for a retrovirus differ from that for the…

A: A virus is a microscopic parasite that can replicate and reproduce only inside living cells. The…

Q: After lambda infects a cell, how does it decide to create a lysogen? Name the major cis and trans…

A: Lambda Phage is a bacteriophage that primarily infects E. coli bacteria. It has a complex life cycle…

Q: How does one performs a Southern blot and how one performs a western blot? Then, consider what a…

A: A blot is a method of transferring proteins, DNA, or RNA onto a carrier. It is used in molecular…

Q: True/False: Retrotransposons and retroviruses share a common ancestor.

A: Retrotransposons are the transposable elements which uses reverse transcriptase enzyme to convert…

Q: Certain environmental conditions such as exposure to UV light areknown to activate lysogenic λ…

A: Lambda (λ) phage is a bacterial virus, or bacteriophage, which infects the bacterium Escherichia…

Q: Is the Degradation of Xrn1 in poliovirus-infected cells an example of virus-encoded molecules…

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Q: My Avya mouse is brownish because a) the CpG island with the transposon is unmethylated. b) it was…

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Q: Provide five examples of viruses that are implicated in cancer development in humans, and which…

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Q: A disgruntled scholar recently tried to infect their instructor with what appeared the  GVV…

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Q: Give and explain the advantages and disadvantages of cracking the genetic code to know the diseased…

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Q: Suppose you had a bacteriophage λ in which the gene encoding the cro protein had been mutated, so…

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Q: In immediate-early transcription of the phage genome, the N protein works as an antiterminator to…

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Q: Which of the following is an example of virus-encoded molecules modifying signal transduction…

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Q: Which of the following statements is not true of both the LacI and TrpR repressor proteins?a) an…

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Q: Contrast the role of the repressor in an inducible system and in a repressible system.

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Q: a) In an experiment, you have changed a DNA sequence directly upstream from a start codon of an…

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Q: The cI protein in bacteriophage l (lambda) is a transcriptional regulator - name the promoters in…

A: cI is a transcription inhibitor of bacteriophage Lambda. It is also known as Lambda Repressor and is…

Q: what would be the likely effect of a mutation that prevented the formation of memory cells?

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Q: Describe the roles of proto-oncogenes and tumor suppressor genes in controlling cell growth, and…

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Q: St

A: Answer-- RAD51 is a protein coding gene.RAD51 plays significant role in homilogouh recombination of…

Q: Is the Degradation of Xrn1 in poliovirus-infected cells an example of virus-encoded molecules…

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Q: Can you please answer 19, and 20 please

A:

Q: Name one type of gene that leads to cancer when it is mutated

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Q: a) In an experiment, you have changed a DNA sequence directly upstream from a start codon of an…

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Q: inducible operon

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Q: What is the effect of a mutation in the allosteric site of the Lac Repressor protein?

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Q: Transduction is sometimes described as a mistake in the bacteriophage reproductive cycle. Explain…

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Q: Which protein product of HTLV-1 functions as a transcriptional activator and is also considered to…

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Q: xplain the reason why these viruses encode their own special fusion protein rather than making use…

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Q: Explain the term inducer.

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Q: 7. If a researcher moves the promoter for the lac operon to the region between the beta…

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Q: Propose some possible reasons why mutations in the RPSA gene affect only the spleen and not other…

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Q: 1) Assume you have an operon that is repressible. In this case, the rate of synthesis of repressor…

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