Why does DNA with a high A-T content have a lower melting temperature, Tm, than DNA with a high G-C content?

Q: In a DNA Double helix ,why doesn't an A or T form two hydrogen bonds(out of the three possible) with…

A: DNA is a double helix structure that consists of four nitrogenous bases names Adenine (A), Thymidine…

Q: If the GC content of a DNA molecule is 60%, what are the molar percentages of the four bases (G, C,…

A: According to the Chargaff rule, the number of Adenines present in DNA is equal to the number of…

Q: DNA and RNA are chemically very similar but are distinguished, in large part, by the presence of a…

A: Deoxyribose and Ribose sugar of DNA and RNA two are very similar in structure, with just one…

Q: What kind of bond do nucleotides use to form the DNA backbone?

A: DNA (deoxyribonucleic acid) is a biological macromolecule that carries the genetic information for…

Q: The base composition of one of the DNA chains of a DNA double helix contains 18 mol-%A, 35 mol-%T,…

A: Most organisms contain DNA or deoxyribonucleic acid as their genetic material. It is a type of…

Q: How many possible nucleotide sequences are there for a stretch of DNA that is N nucleotides long, if…

A: A DNA nucleotide is composed of five-carbon sugar called deoxyribose, a phosphate group, and one of…

Q: What sequence of bases on one strand of DNA (reading in the 3′ to 5′ direction) is complementary to…

A: DNA (Deoxyribonucleic Acid) It is defined as a genetic material that has all the stored genetic…

Q: What functional group is found on a 3' end of DNA?

A: DNA is a double stranded helical structure composed of nucleotides. It is made up of polymer of…

Q: In a DNA double helix, why doesn't an A or T form two hydrogen bonds (out of three possible) with G…

A: The DNA (deoxyribonucleic acid) is made up of nucleotide bases that are made up of nitrogenous bases…

Q: The three-dimensional structure of DNA is said to be maintained by the presence of many hydrogen…

A: The biochemical basis of heredity is DNA. It is widely recognized as the genetic data reserve bank.…

Q: Why are most DNA-binding proteins specific to certain chemicalgroups within the DNA?

A: DNA is the genetic material that carries genetic information in the form of coded nucleotide…

Q: A-DNA has a helix diameter of 25.5 Angstrom, a pitch per turn of 25.3 Angstrom, and a rise per base…

A: The A-DNA, B-DNA, and Z-DNA are the commonly occurring structural conformations of DNA. The most…

Q: If the DNA molecule were placed in boiling water, how would the molecule change?

A: DNA or deoxyribonucleotide is the genetic material of organisms. It is a double helical structure…

Q: If the G+C content of a sample of DNA is 46%, what are the proportions of all four nucleotides?

A: Nucleotides are molecules that consist of phosphate and nucleoside. These serve as monomeric units…

Q: What would fit best for right properties of dna?

A: Introduction: DNA may be a chemical basis of heredity and will be thought to be the depository…

Q: How will each of the following substances or conditions affect DNA structure? a. ethanol; b. heat;…

A: Deoxyribonucleic acid or DNA is a molecule composed of two polynucleotide chains that coil around…

Q: What entropic factor destabilizes helical DNA at high temperature?

A: The double (ds) stranded DNA undergoes structural changes also known as denaturation at high…

Q: What is the numeric relation between pyrimidine and purine bases in the DNA molecule? Is that…

A: DNA and RNA are nucleic acids present in the organisms. DNA is the deoxy ribose nucleic acid whereas…

Q: What role does bonding play in DNA? Where are hydrogen bonds located? Where are covalent bonds…

A: DNA is self replicating biomolecules that are present in chromosomes and carry genetic information…

Q: Why is Tm related to base composition?

A: DNA is the double-stranded molecule that is the genetic material in most organisms except few…

Q: According to Chargaff’s rules for DNA base composition, if a DNA sample contained 10% guanine, the…

A: The base pair relationships are often called Chargaff's rules of DNA base pairing, and that there…

Q: What is the concentration of a DNA solution that absorbs 0.812 and 0.463 at 260 and 280 nm,…

A: Deoxyribonucleic acid (DNA) is the genetic material. It is polymer of nucleotides. The protein…

Q: What properties of DNA make it especially well suited to serve as the genetic material?

A: DNA is a type of nucleic acid. It is a polymer of nucleotide. Initially RNA is believed to be the…

Q: If one strand of a DNA molecule has the base sequence 5′-AGCATTAAGCT-3′, what is the base sequence…

A: The complementary base pairing rule or Chargaff’s rule states that the DNA base pairs are always…

Q: How many different 8-mer sequences of DNA are there?

A: Oligonucleotides are short DNA or RNA molecules. They are characterized by the sequence of…

Q: What is the melting temp. of the following double-stranded DNA fragment…

A: Melting temperature formula :  Tm = 4* (G+C) + 2 * (A+T)  Number of G+C = 6  Number of A+T = 20

Q: What is the average number of nucleotide pairs per micrometer of DNA?

A: Introduction: The two types of nucleic acids are RNA and DNA. The nucleic acid serves as a…

Q: The two strands of a DNA double helix can be separated by heating. If you raise the temperature of a…

A: A double-stranded DNA is joined together by a bond and seems to be a twisted ladder. Which is…

Q: What is the basic monomer (a building block of a DNA molecule?

A: Introduction :  DNA or Deoxyribonucleic acid  is a hereditary material which contain double…

Q: When Chargaff was performing his experiments, the tetranucleotide hypothesis, which stated that DNA…

A: Chargaff principle states that the DNA from any organism should have 1:1 stoichiometric ratio of…

Q: products obtained from hydrolysis of DNA by an acid?

A: Acidic hydrolysis of deoxyribonucleic acid (DNA) constitutes the usual way to obtain the…

Q: What different types of chemical bonds are found in DNA and where are they found?

A: Atoms are organized into molecules through chemical bonds. Chemical bonds help atoms to interact…

Q: The backbone of the DNA molecule is made up of two alternating componebts, what are these? Explain.

A: DNA is considered to be the genetic material within the nucleus that gets packed in thread-like…

Q: The DNA from sea urchins contains about 32% A and about 18% G. What percentages of T and C would you…

A: DNA (Deoxyribonucleic Acid) It is defined as a genetic material that stores genetic information…

Q: How many GB is a DNA?

A: Deoxyribonucleic acid (DNA) is a double-stranded molecule, which consists of two strands of…

Q: If you were to analyze the number of different bases within a sample of DNA, which of the following…

A: In a DNA molecule, there are four types of bases defined by the acronym ACGT, which stands for…

Q: Which of the following relations or ratios would be true for a doublestranded DNA molecule? a. A + T…

A: DNA (Deoxyribonucleic acid) is the genetic material for all organisms except certain viruses. DNA…

Q: Which of the following DNA strands below is expected to have the highest melting temperature?

A: DNA is the genetic material in living beings. It can be seen both in prokaryotes and eukaryotes. The…

Q: . In a supercoiled DNA, a stretch of about 20 base pairs changes from the B form to the Z form. What…

A: DNA is majorly classified into three types as B, A and Z. In B-DNA, there are 10 bases in one…

Q: If the amino acids in the proteins of two organisms are similar, why will their DNA also be similar?

A: DNA or deoxyribonucleic acid is a polymer of deoxyribonucleotides connected together via a…

Q: What are the features that make the structure of the DNA stable? Explain why the DNA is the genetic…

A: The 3Dimentional double-helical structure of DNA molecule was given by James Watson and Francis…

Q: The proposed model of the DNA double helix by Watson and Crick was based on earlier findings the DNA…

A: Watson and crick gave the model of dsDNA. They showed how the complementary bases present in DNA.…

Q: When an aromatic hydrocarbon intercalates between two stacked base pairs, what effect may there be…

A: DNA is made up of bases such as guanine, adenine, cytosine, and thymine. The canonical DNA present…

Q: If the template strand of a DNA is 3’-ATCATG-5’, what will be the complementary strand?

A: A nucleotide is a bio molecule that consist of a nitrogenous base, a pentose sugar (deoxyribose in…

Q: Which of the following is not part of the DNA backbone?

A: Deoxyribonucleic acid is a molecule with two long strands coiled around a common, imaginary, central…

Q: Human DNA contains 20% C on a molar basis. What are the mole per- cents of A, G, and T?

A: There is hydrogen bonding present between the different nucleotides in the double strand structure…

Q: What are the four nitrogenous bases found in DNA?

A: DNA is a macromolecule and is made up of two complementary strands which are anti parallel to each…

Q: Why does increasing salt concentration increase the melting temperature of DNA?

A: DNA is a type of nucleic acid in which two antiparallel polynucleotides are coiled around a central…