What background information did waston and crick have made availale for developing a model of DNA? What wastheir contribution?

Q: In the Meselson–Stahl experiment thatestablished the semiconservative nature of DNA replication,the…

A: Replication follows the semiconservative mode, which was proved by the experiment conducted by…

Q: Which statement best describes how Watson and Crick's model used other scientists' work to create a…

A: According to Watson and Crick's model, the strands of the DNA are twisted around each other in order…

Q: Briefly outline the history of our knowledge of the structure of DNA until the time of Watson and…

A: Deoxyribonucleotide is a double helical structure composed of two coiled polynucleotide strands that…

Q: Why do some journals require the authors of articles describing DNA libraries to make those…

A: Introduction: DNA is the genetic material that transfers from one generation to another. It is a…

Q: Which property of DNA double helix led Watson and Crick to hypothesisesemi-conservative mode of DNA…

A: Watson and Crick in 1953, first discovered the chemical structure of DNA. They explained DNA as a…

Q: here were three main groups working to discover the structure of DNA. Who were the three different…

A: Taken in 1952, this image is the first X-ray picture of DNA, which led to the discovery of its…

Q: Why was the discovery of DNA structure so important?

A: Molecular Biology is the branch of Biological Science that deals with the composition, structure,…

Q: You have a sample of genetic material. The nitrogenous base content is 29% guanine. a) If the…

A:

Q: Describe the key features of the Watson-Crick modelfor DNA structure.

A: In the year 1953, James Watson and Francis Crick gave the double-helical structure of DNA  which is…

Q: What results would you expect if the bacteriophage that Hershey and Chase used in their experiment…

A: Alfred Hershey and Martha Chase conducted an experiment and concluded that DNA is the genetic…

Q: Describe why the structure of DNA led Watson and Crick to point out “apossible copying mechanism for…

A: Introduction DNA strand is composed of three components: Deoxyribose Sugar Nitrogenous Bases…

Q: How did Crick and Watson discovered DNA?

A: It is a molecule composed of two polyneuclotide chains that coil around each other to form a double…

Q: Please describe the Watson-Crick proposal.

A:

Q: If hypoxanthine (structure shown) was incorporated into double stranded DNA, what would it most…

A: Hypoxanthine is a non-natural base that is found in the DNA. DNA is also known as deoxyribonucleic…

Q: In studies of frameshift mutations, Crick, Barnett, Brenner, andWatts–Tobin found that either three…

A: A frameshift mutation is a genetic mutation caused by insertions or deletions of a number of…

Q: What were the characteristics of Watson and Cricks first model? O The bases were facing th

A: Watson and Crick were the discoverer of DNA double helix model. However, their initial model were…

Q: Compare the structural features that distinguish B-DNA from A-DNA and Z-DNA. What is known about the…

A: DNA is the genetic material in almost all organisms with the exception of RNA viruses. DNA exists in…

Q: If RNA were the universal genetic material, how would this have affected the Avery experiment and…

A: Hershey and Chase experiments showed that when bacteriophages is made of DNA and protein and when…

Q: Given the state of knowledge at the time of the Avery, MacLeod,and McCarty experiment, why was it…

A: Answer- According to the Griffith, Avery, Macleod and McCarty experiment DNA was the genetic…

Q: You do a PCR reaction,run a sample of the product on a gel,and use a dye to visualize the bands.…

A: Following changes can be done: 1. Since the upper band is non-specific, it is required to increase…

Q: What background information did Watson and Crick had available with them for developing a model of…

A: The following knowledge was available to Wastson and Crick, which aided them in developing a DNA…

Q: If the analysis of DNA from two different microorganismsdemonstrated very similar base compositions,…

A: The genetic material of bacteria and all the microorganisms is DNA which is comprised of nitrogenous…

Q: Please briefly describe the content of Watson-Crick Proposal.

A: James Watson and francis crick were pioneers in genetics as they discovered the three dimensional…

Q: How did Griffith’s work provide a foundation for the experiments of Avery and his colleagues…

A: Introduction  In the past years when the genetic and molecular biology techniques were not so…

Q: Describe the Watson Crick model of DNA.

A: The scientists named Watson , Crick and Wilkins have proposed a model of DNA in 1953 based on X-Ray…

Q: Briefly outline the history of our knowledge of the structure of DNA until the time of Watson and…

A: Watson and Crick were the ones who finally unfolded the structure of DNA molecule and for this…

Q: What observations are consistent with the conclusion that DNA serves as the genetic material in…

A: The organisms are primarily categorized based on their cell type. The prokaryotic organism lacks…

Q: Contrast the contributions made to an understanding of transformation by Griffith and by Avery and…

A: Microorganisms or microbes have various kinds of interaction with other living things. They exhibit…

Q: What did the Watson–Crick model suggest about the replication of DNA?

A: The most exciting aspect of the structure of DNA deduced by Watson and Crick was, as expressed in…

Q: Would an experiment similar to that performed byHershey and Chase work if the basic design were…

A: Gene transfer is the method of inserting genetic material (DNA or a gene of interest) into cells…

Q: The goal of many computer programs is to identify sequenceelements within a long segment of DNA.…

A: The collection of instructions executed to perform a specific task by a computer is called the…

Q: What did Watson and Crick agree with Rosalind Franklin's data? DNA has two similar parts that are…

A: Cells, the most fundamental unit of life, are found in all living things. All of life's vital…

Q: The goal of many computer programs is to identify sequence elementswithin a long segment of DNA.…

A: A gene is a stretch of nucleotides present in the DNA molecule. It encodes information for the…

Q: Isaac Newton said, “If I have seen further, it is by standing on the shoulders of giants.” How does…

A: The statement “If I have seen further, it is by standing on the shoulder of giants” given by Isaac…

Q: Which of the following is not one of the resources that Watson and Crick used to solve the structure…

A: ANSWER;- d) Labeling of DNA with radioactive phosphorus(32p). Explain;-Covalent adducts framed by…

Q: Which of the following features is associated with the Watson and Crick model of the DNA?

A: 1. Watson and crick described that DNA strands right which twisted around each other forming right…

Q: What did Rosalind Franklin do when she saw Watson and Crick’s first model? Why?

A: After seeing Franklin's x-ray images of DNA and her report on DNA's symmetry, Watson and Crick built…

Q: Does the Hershy-Chase experiment distinguish between DNA and RNA as the molecular serving as the…

A: Hershey and Chase demonstrated that nucleic acid is the genetic material. DNA is a double-stranded…

Q: The image below was the basis of Watson and Crick to be able to elucidate the DNA structure.…

A: DNA is the genetic material which is present inside the cell nucleus of most eukaryotic cells. DNA a…

Q: Chargaff determined the base composition of DNA from a variety ofdifferent sources.What information…

A: Introduction DNA is the genetic material whose structural unit is nucleotides. Each nucleotide…

Q: Was Pauling’s hypothesized model of DNA In January 1953 “correct”?

A: The discovery of the spiral structure of proteins in the 1950s, Linus Pauling became recognized as…

Q: Describe the DNA helix proposed by Watson and Crick

A: The double-helix model of DNA is confirmed by Watson and Crick in the year 1953, It is called the…

Q: . What information about the structure of DNA wasobtained from X-ray crystallographic data?

A: The deoxyribonucleic acid (DNA) is a hereditary material that is found in almost all living…

Q: Can you recall the two chemical differences between DNA and RNA?

A: The material used to store genetic information in the mitochondria or nuclei of an organism’s cells…

Q: What is the structure of double-stranded DNA as determined by Watson and Crick?

A: In 1953 Watson and cricks realized that DNA  is made up of two chains of nucleotide pairs and double…

Q: Explain how Avery-MacLeod-McCarty experiment discovered that DNA is the genetic material.

A: The first direct evidence that the DNA transmits genetic information came from the transformation…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.