Q: What is linker scanning mutagenesis?
A: Answer: Introduction: Old-style approaches, containing linker-scanning mutagenesis includes…
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 is the name of the DNA duplication process? What is the main enzyme that participates in it?
A: Every living cell divides to form multiple cells. During this division process, there is another…
Q: Which type of mutation involves only one base pair? a. insertion b. deletion c. inversion d.…
A: A mutation occurs when DNA molecules are copied or replicated, resulting in DNA variants that can be…
Q: Why is a random mutation more likely to be deleterious than beneficial?
A: Mutations are sudden negative effects in DNA sequences that can occur when the DNA is in the…
Q: If you are using a restriction enzyme that make 8 cuts in the Lambda phage DNA, how many bands…
A: Introduction :- Restriction enzymes are bacterial enzymes that cuts the double stranded DNA molecule…
Q: Do you consider TEs to be mutagens? Explain.
A: Mutation is defined as sudden inheritable change that occurs in the DNA sequence. Mutation occurs…
Q: Considering prokaryotes, what is the enzyme that removes the RNA primer and replaces it with newly…
A: RNA primer is used in initial priming to then later on DNA ligase can not seal the nick between the…
Q: If a mutagen causes bases to be removed from nucleotides withinDNA, what repair system could fix…
A: By the process of mutation, bases are removed from the nucleotides.
Q: What would happen evolutionarily if DNA was transmitted precisely from generation to generation…
A: Mutations are inheritable alteration in DNA sequence. It can occurs in single base pair or long…
Q: What is the function of DNA topoisomerases?
A: In prokaryotes, replication process requires three types of DNA polymerases (DNA polymerase I, II,…
Q: Researchers sometimes use gamma rays to induce deletion mutations in certain organisms and thus…
A: Question - Researchers sometimes use gamma rays to induce deletion mutations in certain organisms…
Q: When the mismatch repair system detects a distortion in the DNA double helix due to a mismatch, what…
A: In the process of DNA (deoxyribonucleic acid) replication, DNA of the cell replicates itself while…
Q: Assuming you started with only one copy of a DNA sequence, how many copies should be present after…
A: Polymerase chain reaction (PCR) is a method applied in molecular biology for DNA amplification. It…
Q: How could DNA-mediated transformation be used to test chemicals for their mutagenic activity?
A: Deoxyribonucleic acid (DNA) is an inheritable entity of almost every living organism. It is…
Q: If you were examining a sequence of chromosomal DNA, what characteristics would cause you to believe…
A: Step 1 The transposable element is a DNA (deoxyribonucleic acid) sequence that can change its…
Q: How does a mutagen induce mutation ?explain with examples?
A: The DNA is a genetic material- a polynucleotide chain made up of the long chain of A, T, G, and C.…
Q: What is the result of Frameshift mutations from the insertion or deletion of nucleotides within the…
A: Mutation, an alteration in the genetic material of a cell of a living organism or of a virus that is…
Q: Deletion in genomic DNA removes which parts of two genes?
A: The process of spontaneously occurring deletion must include two chromosomes that break to cut out…
Q: When different individuals within a population have different numbers of restriction sites within…
A: Introduction: A restriction site in DNA is a group of 6–8 base pairs that a restriction enzyme…
Q: What is transgenic DNA?
A: Recombinant DNA technology involves integrating DNA molecules from two different species and…
Q: What are base analogs and why are they mutagenic?
A: Introduction :- A mutagen is a substance that can cause DNA mutations by chemical or physical means.…
Q: What would happen if, in the course of replication, thetopoisomerases were unable to reattach the…
A: DNA is a double helix molecule.
Q: If a bacterium possesses a mutation in the gene for DNA polymerase III, resulting in an enzyme…
A: In general, DNA replication is a very accurate process. Random mistakes occasionally occur and are…
Q: What is the significance in rolling the dice to determine how to mutate the DNA?
A: Mutations are abrupt changes in the DNA which can make serious changes in the protein expressed.…
Q: What is a mutagen?
A: The human genome is very dynamic in nature, it tends to mutate and any change in the genetic…
Q: What mutations can be caused by a single base change in coding exons?
A: A mutation is any kind of alteration in the DNA/mRNA sequences. It is mainly caused due to the…
Q: Do DNA-polymerase enzymes also function as exonucleases?
A: DNA polymerase enzyme is primarily responsible for the synthesis of DNA by the attachment of various…
Q: What types of mutations occurred in DNA-(b) and DNA-(c)? What codons are found in the mRNA for the…
A: Introduction Deoxyribonucleic acid (DNA) is a molecule made up of two polynucleotide chains that…
Q: What are categories of mutagenic chemicals ?
A: Mutagens is the physical or chemical substance which is permanently change the genetic material of…
Q: How do type IA, type IB, and type II topoisomerases alter DNA topology?Which processes require the…
A: Enzyme is a catalytic molecule that increases the rate of any chemical reaction without being used…
Q: If a restriction enzyme cuts at this DNA sequence: TACGGAT, in general what is this sequence called?
A: DNA is a double-stranded molecule consisting of two strands of nucleotides. The bases in one strand…
Q: How do we know that DNA repair mechanisms detect and correct the majority of spontaneous and induced…
A: DNA can be defined as the deoxyribonucleic acid, which is the molecule that contains the genetic…
Q: What is the enzyme responsible for methylating DNA? How does a drug like doxorubicin affect DNA…
A: DNA is the nucleic acids present in the organisms. DNA is the deoxy ribose nucleic acid in which…
Q: How many codons are there in the mutated DNA-(b) and DNA-(c)? What types of mutations occurred in…
A: Codon is sequences of three DNA or RNA nucleotides.
Q: If only part of the genome contains genes, why sequence the whole thing?
A: The genome is the complete genetic material of an organism.
Q: Describe how certain restriction enzymes generate DNA fragments with sticky ends, and others…
A: Restriction enzymes also called molecular scissors are the type of nuclease enzymes that cleaves the…
Q: If you performed PCR to amplify a gene region, and you began with 20 copies of double stranded…
A: PCR or polymerase chain reaction is a method that amplifies DNA (deoxyribonucleic acid) and it can…
Q: Why is a primer needed at each end of the DNA segment beingamplified by PCR?
A: Primer - Primer is a kind of short nucleotide sequence which is used as a starting point in the…
Q: Is DNA fragmentation genetic?
A: Deoxy ribonucleic acid (DNA) is the genetic material of most organisms that carry coded genetic…
Q: What amino acid is coded by the original sequence (GTA) if the sequence refers to the template…
A: Deoxyribonucleic acid, or DNA, is a molecule that holds the information that allows an organism to…
Q: Why are X rays more potent mutagens than UV radiation?
A: Mutations arise due to permanent alterations occurred in the genotypes of organisms which cause…
Q: In genetic transformation, what is meant by the wordcompetence?
A: The process of taking up naked or foreign deoxyribonucleic acid (DNA) from the environment is called…
Q: Why don’t bacteria cut up their own DNA when they produce restriction enzymes?
A: Restriction enzymes are the proteins which can cut double stranded DNA segments only at some…
Q: If the rate of replication in a particular prokaryote is 900 nucleotides per second, how long would…
A: DNA replication a process by which DNA makes copies of itself and this process requires lots of…
If a mutagen causes bases to be removed from
DNA, what repair system would fix this damage?
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- If a mutagen causes bases to be removed from nucleotides withinDNA, what repair system could fix this damage?The xenobiotic molecule ethyl chloride (CH3CH2Cl) is mutagenic. To what class of mutagenic substances does it belong?A mutation occurs that changes a codon from UCC to UCA. It turns out that this codon is for an amino acid in the catalytic site of the enzyme DNA glycosylase, which is involved in DNA repair. What is the most likely outcome for an organism carrying this mutation? The mutation will be tolerated by the organism and will lead to no physical changes. Because the organism will no longer be able to perform base excision repair, the organism's DNA will mutate at a rapid rate. A disease such as cancer will develop rather quickly. Because the organism will no longer be able to perform base excision repair, the organism's DNA will mutate at a slow but steady rate. Over time, a disease such as cancer will develop. No answer text provided. ◄ Previous Next ▸
- Xeroderma pigmentosum is a genetic disease caused by an error in the nucleotide excision repair process that fixes damage to DNA by ultraviolet light. Studies have shown that it can result from mutations in any one of seven genes. What can you infer from this finding? A) There are seven genes that produce the same protein B) These seven genes are the most easily damaged by ultraviolet light. C) There are seven enzymes involved in the nucleotide excision repair process. D) These mutations have resulted from translocation of gene segments.Name the enzymes that cut the DNA at specific sequences and create sticky ends.Explain why cuts are made on both sides of the damaged region of the DNA.
- Escherichia coli and other bacteria methylate adenines on the original strand to distinguish the original strand from the newly replicated strand of DNA. Why is this distinction important?What is a mutagen?1) A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors. All BUT ONE of the statements below correctly describes or explains genetic mutations. A) Mutation can disrupt normal cell activity and cause diseases, like cancer. B) Mutations in parents' cells are then passed down to offspring via reproduction. C) Our cells can recognise any potentially mutation-causing damage and repair it before it permanent. D) Mutations can occur as the result of exposure to environmental factors such as smoking, toxins and radiation.
- Is there any situation in which DNA is made based on a RNA template? What is the enzyme involved?I mutation occurs such that the sequence now reads: CTA CTT TTT. A) Transcribe the short DNA sequence. B) translate this short DNA sequence. C) what type of point mutation is this? A mutation occurs such that the sequence now reads: CTA GTC TTT. 1)transcribe this short DNA sequence. 2. Translate this short DNA sequence. 3. What type of point mutation is this?Chemical mutagens often cause oxidation or deamination of DNA bases. This can lead to cancer by causing: A) Activation of replication. B) Activation of transcription. C) Non Watson-Crick base pairing. OD) Changes to cytochrome P450 enzymes. OE) Activation of translation.