How does a host cell harboring a restriction enzyme protect its own DNA?

Q: What type of repair system would cells most likely use to repair DNA with a deaminated adenine?

A: The spontaneous alteration of the DNA base pairs is needed to undergo the process of DNA repair.…

Q: What are DNA excision-repair systems?

A: Molecular biology is the field of biology that studies the composition, structure, and interactions…

Q: Double-stranded breaks are repaired by: a). direct reversal of DNA damage b). recombinational repair…

A: Ionizing radiation and radio-mimetic compounds induce DNA double-strand breaks (DSBs), but they may…

Q: Several common antibiotics affect some strains of bacteria's ability to carry out transcription…

A: Transcription is a heterocatalytic action of DNA by means of which RNA is synthesized from specific…

Q: he lac operon contains the genes that the bacterium needs to be able to use lactose as a carbon…

A: An Operon is a unit of structure and function that consists of the clusters of regulatory genes…

Q: the nucleotide excision repair system can undo damaging caused by UV radiation? a) cataracts in…

A: When many proteins and RNAs are damaged, they will be degraded and sugars, are metabolized in order…

Q: Why is formation of the replicative form of fX174 necessary inorder to make phage-specific mRNA?

A: DNA is the genetic material in most of the organisms. It is mostly double-stranded but some viruses…

Q: What is the toxin produced by E. coli O157:H7 that was encode by phage as a consequence of lysogenic…

A: E. coli is a gram-negative bacillus and some of its strains have evolved into pathogens. One of…

Q: Figure 5 shows the lac operon structure in Escherichia coli.   a) Name structures P, Q and R. b)…

A: Lac operon  Lac operon or lactose operon l is a group of gene that is code for transportation and…

Q: A microbial geneticist isolates a new mutation in E. coliand wishes to map its chromosomal location.…

A: A mutation is a sudden change in the DNA sequence. Mutations can result from mistakes during DNA…

Q: An operon that encodes enzymes that degrade ampicilin is most likely __________ . A) inducible B)…

A: Option A and B are the answer. An operon that encodes enzymes that degrade ampicilin is most likely…

Q: The gene atg-12 codes for a protein associated with abnormal rates of cell destruction and recycling…

A: It is given that atg 12 gene us responsible for producing a protein which is associated with…

Q: A bacteriophage lytic development cycle is determined by the expression of its genes. How are these…

A: Bacteriophages are also known as phages, these are viruses that infect bacteria for the completion…

Q: Name the enzymes that cut the DNA at specific sequences and create sticky ends.

A: A substance produced by a living organism that acts as a catalyst to bring about a specific…

Q: disease caused by an error in the nucleotide excision repair process that fixes damage to DNA by…

A:

Q: In E. coli, the gene bioD+ encodes an enzyme involved in biotin synthesis, and galK+ encodes an…

A: Gene transfer is the process of insertion of unrelated DNA into cells. There are three mechanisms of…

Q: Double-stranded breaks are repaired by     a)  homologous recombinational repair.   b)…

A: *when left unrepaired, double stranded breaks in dna can result in chromosome rearrangements and…

Q: Why is generalized transduction able to transfer anygene, but specialized transduction is restricted…

A: Introduction: transduction is a process of gene transfer in bacteria from donor to recipient…

Q: Describe what would happen to the lac operon in a low-lactose environment and in a high lactose…

A: LacZ (encodes beta-galactosidase), lacY (permease), and lacA (trans-acetylase) are the three genes…

Q: Several proteins involved in DNA repair are used in multiple pathways. Which one of the following is…

A:

Genetic Recombination

Recombination is crucial to this process because it allows genes to be reassorted into diverse combinations. Genetic recombination is the process of combining genetic components from two different origins into a single unit. In prokaryotes, genetic recombination takes place by the unilateral transfer of deoxyribonucleic acid. It includes transduction, transformation, and conjugation. The genetic exchange occurring between homologous deoxyribonucleic acid sequences (DNA) from two different sources is termed general recombination. For this to happen, an identical sequence of the two recombining molecules is required. The process of genetic exchange which occurs in eukaryotes during sexual reproduction such as meiosis is an example of this type of genetic recombination.

Microbial Genetics

Genes are the functional units of heredity. They transfer characteristic information from parents to the offspring.