The primer is needed during DNA replication because: A) it provides energy for making the new strand B) actually, primer is NOT needed because DNA polymerase can make DNA "from scratch" C) it helps DNA polymerase to bind to the DNA D) it serves as an existing nucleic acid to which DNA polymerase can add nucleotides to form the new strand E) it serves as the template for making the new strand

Q: The enzyme used to join bits of DNA isa) DNA polymeraseb) DNA ligasec) Endonucleased) Primase

A: The process in which deoxyribonucleic acid (DNA) forms the its copy during cell division is known as…

Q: Which helps prevent errors in DNA replication? A) Complementary base pairing reduce errors B) DNA…

A: DNA( deoxyribonucleic acid) is the double-stranded molecule that is the genetic material in most…

Q: Which of the following is an example of RNA-dependent DNA polymerase? a) RNA polymerase II b) DNA…

A: DNA polymerase is an enzyme that catalyzes the synthesis of new DNA strands during DNA replication.…

Q: DNA replication always proceeds in only one direction because the ________ of the incoming…

A: DNA replication is an important part of the cell cycle and it takes place in the S-phase of the cell…

Q: The pro Tien responsible for the initial step in unwinding the DNA helix during replication of the…

A: Answer is dnaA. The protein responsible for the initial step in unwinding the dna helix during…

Q: Which of the following enzyme is required for end to end joining of DNA?a) DNA ligaseb) Restriction…

A: DNA (deoxyribonucleic acid) is a biological macromolecule. It consists of repeating units of…

Q: Explain the following statement : a) initiation of bacteriall DNA replication is an energy…

A: Bacterial DNA replication also occurs in 5ˊ-3ˊdirection like eukaryotic replication. Both bacteria…

Q: The figure below shows a molecule of DNA with its strands separated prior to DNA replication. The…

A: Answer: REPLICATION of DNA : It is the process in central dogma during which DNA strands gets…

Q: 18) UV radiation damages DNA by causing... a) frame-shift mutations b) base substitutions c) bonds…

A: Introduction Genetic variation is very important for evolution, but genetic stability is crucial for…

Q: Which replication enzyme(s) is/are responsible for synthesizing new DNA components: A) Ligase B)…

A: In molecular biology, the biological method of creating two identical DNA replicas from one initial…

Q: Where does a restriction endonuclease cuts DNA?a) Ligation siteb) Recognition sequencec) Orid)…

A: Restriction endonucleases are enzymes that cut the DNA strand at a specific sequence. They are…

Q: What factors promote the fidelity of replication during synthesis of the leading strand of DNA?…

A: DNA replication is a long drawn process that needs many enzymes and binding proteins to initiate,…

Q: Which statement concerning telomeres and telomerases is FALSE? a) Telomeres are repetitive sequences…

A: Telomers are distinctive structures. Telomerases are the special enzymes that play an important role…

Q: 2) Replicating structures in DNA can be observed in the electron microscope. Regions being…

A: Replication fork It is defined as the structure formed in the long helical DNA during the process of…

Q: Which of the following is NOT correct concerning the initiation of replication in E. coli?…

A: In E.coli, the DNA replication takes place by the binding of DnaA to the OriC (the origin of…

Q: single DNA molecule contains two specific target sites separated by an intervening sequence. If…

A: *Here A single DNA molecule contains two specific target sites and they are separated by an…

Q: Choose the right combination of components required to set up a polymerase chain reaction from the…

A: Polymerase chain reaction is a method widely used to rapidly make millions to billions of copies of…

Q: DNA strands that can form a double helix are said to be Select an answer and submit. For keyboard…

A: Deoxyribose Nucleic Acid or DNA is a double-stranded molecule with the shape of a twisted ladder.

Q: Chemical mutagens often cause oxidation or deamination of DNA bases. This can lead to cancer by…

A: DNA damage is often caused by external sources like radiation exposure, exogenous chemical reactions…

Q: a) "Out of three E.coli DNA polymerases, DNA polymerases 3 has a high processivity and rate of…

A: A DNA polymerase is a member of a family of enzymes that catalyze the synthesis of DNA molecules…

Q: From where do we get primers for sequencing DNA? A) they are synthesized by reverse transcriptase…

A: Primer is a short piece of ribonucleic acid sequence that provides a starting point for DNA…

Q: The following statements are correct EXCEPT: A) Information in the DNA is transcribed int mRNA and…

A: DNA is a genetic material which is safely stored inside the nucleus of the cell . It is ladder like…

Q: The Okazaki fragment is formed     a)  near the replication fork.   b)  on the lagging strand.…

A: According to the definition, DNA fragments created during DNA replication is called Okazaki…

Q: Figure 2 illustrates the important elements of a cosmid. a) Briefly describe the importance of…

A: In the recombinant DNA technology the foreign DNA or target DNA is inserted into the vector then the…

Q: DNA double helix is stabilized by ...   a)  H-bonds between the sugar-phosphate backbones.   b)…

A: Answer. Watson and Crick first describe the structure of DNA double helix in 1953 e using x-ray…

Q: In DNA replication, the enzyme helicase breaks hydrogen bonds between complementary nucleotides and…

A: PCR is a process that helps to produce thousands of DNA copies from a single type of DNA. This…

Q: a) If you isolated DNA from the ear and the tail of the same mouse, would you expect the DNA,…

A: The capacity to extract DNA is critical for researching the genetic causes of disease and developing…

Q: DNA-binding proteins interact predominantly within which portion of a double-stranded DNA helix? A)…

A: dna is the genetic material , which store all the biological informations.

Q: 10) In the diagram below: a) Label a phosphodiester linkage b) Label an N-glycosidic bond c) Label…

A: Phosphodiester bond : This bond is formed by the condensation of sugar and phosphoric acid…

Q: Deamination of cytosine to form uracil can happen spontaneously during replication. It can be…

A: Deamination is a chemical process that removes an amino group from a molecule, such as a nucleotide…

Q: Which of the following replication enzymes will most likely be involved in COVID19 RNA replication?…

A: Coronaviruses (CoVs) are the most common type of virus in the Nidovirales order, which comprises the…

Q: In sequencing methods, the role of the electrophoresis is a)To stop the replication at that base…

A: Electrophoresis is a technique used in DNA sequencing methods to separate DNA fragments based on…

Q: Sort the phrases into the appropriate bins depending on which protein they describe. 1) Binds at the…

A: Deoxyribonucleic acid (DNA) replication process involves copying DNA from the existing DNA. In DNA…

Q: (a) Eukaryotic DNA replication is more complex than prokaryotic replication. Give one reason why…

A: a. Eukaryotic DNA replication is more complicated than prokaryotic replication because of the…

Q: In terms of new DNA strands that are generated, what are the differences between replication and…

A: DNA replication is the biological method of creating two identical replicas of DNA from a single…

Q: Select all the proteins involved in DNA repair. a) Ef-Tu b) DNA glycosylases Oc) Muts d) DNA ligase…

A: DNA repair is a crucial process where the cells fixes the damage in the DNA. The damage is caused by…

Q: Which of the followings statements are true about DNA polymerase? 1.) It can only go in one…

A: DNA polymerase is an enzyme that plays a key role in the replication of DNA. It catalyzes the…

Q: What is the purpose of the dideoxynucleotide triphosphates in the Sanger sequencing reaction?

A: In 1977, Sanger proposed chain termination method of DNA sequencing. He used ddNTP or…

Q: Which of the following items do not affect the melting temperature of DNA? A length of the DNA B the…

A: Melting temperature ( Tm): half of DNA gets denatured (melts). Tm = 2* (A+T) + 4* (G+C)

Q: Which of the following is not a DNA repair mechanism?

A: DNA repair is a set of procedures through which a cell detects and repairs damage to the DNA…

Q: How many unique primers are required to amplify a single DNA target region?   a) 1 b) 2 c) 4 d)…

A: Targeted sequencing is a fast and low-cost method to detect known and novel variants in specific…

Q: 1. What cellular process is shown at the right? 2. If adenine is located on strand 4, then what…

A: DNA Replication is a complex process that requires the presence of many factors and enzymes to begin…

Q: scientist uses a molecule of DNA composed of radioactive nucleotides as a template for replication…

A: DNA replication is the process of formation of exact duplicate copy of DNA. Transcription RNA is…

Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.