5. Frederick Griffith observed that an unknown but heritable substance could move from a dead population of deadly bacteria to a live population of harmless bacteria, making the live population deadly. Oswald Avery and his colleagues later showed that the mysterious "transforming principle" was DNA. a) Explain how the phenomenon that Griffith observed can lead to rapid evolution in bacteria populations. b) Discuss how the transformation process Griffith observed, under controlled conditions, can be used in the arena of genetic engineering.

Q: Which of the following sequences is most likely to be recognized and cut by a 6- cutter restriction…

A: Restriction enzyme is an enzyme that cuts DNA into small fragments at specific sites within…

Q: Why is it important to use a hyperthermophilic DNA polymerase in PCR? a) Because only…

A: PCR polymerase chain reaction is a biotechnology technique used for amplification of DNA.

Q: Select the true statements: A.) It is possible, through genetic engineering, to fuse a fluorescent…

A: Explanation:     -A fluorescent fusion protein can indeed be produced by fusing a fluorescent…

Q: Which of the following is NOT needed to perform a PCR reaction? A) DNA primers B) deoxyguanosine…

A: Components required for PCR include a DNA sample which acts as a template , DNA primers, free…

Q: P-element transformation is a method that can be used to generate transgenic ______. A.) mice B.)…

A: Introduction:  P - elements are the  transposable elements that  discovered in the  Drosophila…

Q: There are four possible observations that suggest an error occurred in a PCR reaction: a) Sequence…

A: PCR reaction is a method used to amplify a small sample into millions of small ones which help the…

Q: frederic griffith used the word transformation to describe the changes in bacteria that he observed.…

A: Frederic Griffith was a British bacteriologist whose experiments proved the existence of a…

Q: You are trying to isolate a mutant of wild-type E. coli thatrequires histidine for growth. This can…

A: E.coli. is a type of bacteria. Bacteria are unicellular and prokaryotic organisms that live in a…

Q: 17. Which pair of scientists discovered the structure of the DNA double helix and helped to make…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 5) Which mutation would NOT cause a change in an organism's phenotype?   A) TAT becomes TGT     B)…

A: The amino acids coded are decided by the sequence of the DNA, as the template strand is transcribed…

Q: Describe the differences between transformation, transduction and conjugation.

A: Answer: There are two types of gene transfers : Horizontal gene transfer and Vertical gene transfer…

Q: 4. The image below is based on the Meselson Stahl experiment where bacteria are grown in 15N and…

A: The Meselson-Stahl experiment showed that DNA replication is a semiconservative process. In this…

Q: Polymerase chain reaction is commonly used in the laboratory for a) reverse transcription Ob) DNA…

A: In biological and medical research centers, The polymerase chain reaction (PCR) is a frequent…

Q: 1) polymerize chain reaction is an experimental method for making multiple copies of segments of DNA…

A: Questions :    1) polymerize chain reaction is an experimental method for making multiple copies of…

Q: Which of the following is most relevant to the term "hybridization"? a) base pairing b) nuclease c)…

A: Hybridization is to combine two substances to make a hybrid. In molecular biology, Hybridization is…

Q: A DNA library is aa) A DNA fragment inserted into a vector.b) A general collection of all genes…

A: The cDNA is called the complementary DNA and is synthesized from the single-stranded RNA or mRNA or…

Q: injected mice with non-pathogenetic bacteria that had been incubated in the remains of pathogenic…

A: Ans:   In this case there was no transformation

Q: Do all of them True/False 31) The process by which an electrical charge is used to introduce DNA…

A: Molecular biology is a field of biological sciences that studies the structure, composition and…

Q: 38) The following treatment(s) control bacterial growth by damaging the DNA structure of bacteria:…

A: Understanding the development and survival of microorganisms is one of the most fundamental aspects…

Q: 22.Identify the single most correct answer: (a) Ames assay (test) can be used to identify…

A: Viruses viruses are the organisms that lack their own cell machinery and so are non-living unless…

Q: There may be more than one correct answer The ability of DNA to denature is important for which of…

A: DNA has double stranded structure.The process of breaking down double stranded DNA into single…

Q: In DNA-DNA Hybridization, sequences from two separate organisms that show partial hybridization…

A: DNA-DNA hybridization is the process of hybridization of genetic information between two different…

Q: 16. Which of the following enzyme repairs the DNA backbone during molecular cloning (that is you are…

A: Answer: Introduction: Molecular cloning is a genetic methods in biotechnology, which are utilized to…

Q: Practical applications of recombinant DNA technology include the: 1. Efficient production of useful…

A: Recombinant DNA technology, also known as genetic engineering, is a technique used to manipulate and…

Prokaryotic evolution

The term evolution means the gradual change or a transformation from a simple or primitive state to a complex or advanced state. Prokaryotic evolution is a concept that involves the evolution of the form and function of most primitive organisms (prokaryotes) through several stages and changes to form diverse life as a part of organic evolution.