Which of the following is considered to be a spontaneous source of mutations that impact the genome? Fidelity errors during DNA replication Dimerization of thymine due to UV exposure Insertion of mutations due to histone irregularities Shattering of DNA due to x-ray exposure

Q: Describe the role of mismatch repair (MMR) in DNA repair.Why do mutations in MMR proteins increase…

A: DNA mismatch repair is a system for recognizing and repairing erroneous insertion, deletion, and…

Q: Which of the following functions in the regulation of gene expression?   plasmids euchromatin…

A: Gene expression in eukaryotic cells is mediated by activators and repressors of transcription as…

Q: DNA is known to be the repository of genetic information in each living cell, which its integrity…

A: The mutation leads to Faulty proteins being synthesized. Most enzymes are proteins. The…

Q: Which of the following is a transition mutation? OG --> T G --> A G --> C

A:

Q: The End Replication Problem:       refers to the end of a lineage due to no accessible breeding…

A: The End Replication Problem is a challenge encountered during the DNA replication of linear…

Q: Which type of DNA variant is most likely to result from slippage of DNA polymerase during…

A: DNA sections with direct repeats of 1-4 bases, also known as tandem repeats, are typically affected…

Q: are responsible for transcription in both prokaryotes and eukaryotes.    Question 17 options:…

A: The process of transcribing a piece of DNA into RNA is known as transcription. Messenger RNA is made…

Q: What type of mutations is obtained for the following mutagens. Nitrous acid.  Point, addition, or…

A: Hi. As you have posted multiple questions, I will be answering the first two for you. If you need…

Q: Which of the following is not a factor that increases mutations?

A: Mutation  Mutation can be defined as the structural change in arrangement of DNA base pairs.…

Q: Imprinted genes are A- usually methylated B- methylated and not replicated C- not replicated D-…

A: Introduction :- Genomic imprinting is an epigenetic phenomenon in which genes are expressed in a way…

Q: MEthylation is usually via?

A: DNA methylation is an epigenetic change. It plays an important role in gene imprinting, X-gene…

Q: Which of the following can only arise as a spontaneous mutation? Group of answer choices Gamma rays…

A: A mutation is a change in the sequence of the DNA. It affects the codons of the DNA or mRNA, which…

Q: In cancer like disease, what kind of mutations are more focussed? Single Nucleotide Polymorphism or…

A: Introduction  Cancer is well known disease now a day. In US, 1 in 2 women and 1 in 3 men develops…

Q: Eddie the E. coli bacterium cell is suspicious that his DNA contains a thymine dimer. What is the…

A: Here in the question it is described that DNA thiamine dimer is formed. And it's proposed that DNA…

Q: Which of the following is considered to be a spontaneous source of mutations that impa the genome? O…

A: The genome is the finished arrangement of hereditary information in a organic entity. It gives all…

Q: Replicative senescence is a process used by malignant cells to achieve immortalization by critically…

A: Replicative senescence is a natural limit for normal cells.Definition:Normal cells can only grow to…

Q: Which of the following repair pathways produces more mutations during the process of repair?…

A: DNA repair is a collection of processes by which a cell identifies and corrects the damage to the…

Q: Point mutations arise more commonly than other types of mutations. -True or False

A: Point mutation is a mutation in which one base pair in the DNA sequence get altered.

Q: Which of the following is NOT true of DNA-methylation? O It is an epigenetic change. O It involves…

A: DNA stands for deoxyribonucleic acid. It is the genetic material.

Q: Which of the following point mutations would properly be defined as a transition mutation?  the…

A: The substitution mutations of DNA are of two types: Transitions and Transversions. Transitions are…

Q: Which of the following genetic alterations is most likely to result in a silent mutation? a…

A: Transition or transversion mutations may lead to no change in the sequence of the protein known as…

Q: X-ray exposure often leads to DNA damage such as double strand breaks which is categorized as a type…

A: An individual's bodily design is determined by DNA. The DNA that is passed down from parents to kids…

Q: In humans, sickle-cell anemia and hemophilia represent which type of mutations?     Loss of…

A: Mutations are of different types. Mutations are change in the sequence of DNA which may cause the…

Q: Which of the following types of point mutations will not produce a change in amino acids and…

A: Answer: MUTATION : It is the change occured in the nucleotides of DNA/genome sequence , this is…

Q: Nitrogen mustard gas, Cisplatin and other alkylating agents cause:   Question 16 options:   double…

A: Alkylating agents are a class of chemicals that can add alkyl groups (e.g., methyl or ethyl groups)…

Q: The DNA conformation which is observed at high salt concentrations and which plays a possible role…

A: All known living things, including many viruses, carry the genetic instructions necessary for their…

Q: methylation in prokaryotes is FALSE?   DNA methylation is catalyzed by DAM methylase on adenine…

A: Replication is a semi conservative process in which one strand is derived from the parent and the…

Q: Most mutations confer beneficial traits on the organism in which they occur.  True False

A: In biology, a mutation is a change in the sequence of an organism's DNA. This can occur in a variety…

Q: The belief that rare mutations within a single cell allow it bypass growth barriers to become…

A: Driver Mutations: These are genetic changes that directly drive growth to cells, allowing them to…

Q: Which of the following types of physical mutagens produces thymine dimmer mutations? A- gamma rays…

A: Given:       Physical mutagens produces thymine dimmer mutations.

Q: The exonuclease activity of DNA Pol III increases its:   Affinity for hemimethylated DNA   Accuracy…

A: A cell generates a perfect copy of its DNA through the natural procedure of DNA replication…

Q: Which of the following are affected by changes in DNA methylation? Choose all that apply. The…

A: DNA methylation is defined as a process by which a methyl group is added to the structure of a DNA…

Q: Which of the following contribute to introducing genetic change into genomes? (select all the apply)…

A: The objective of the question is to identify the processes that can introduce genetic change into…

Q: You have a patient slated to undergo somatic cell gene therapy to alleviate a cystic fibrosis…

A: Answer: Cystic fibrosis is the result of homozygous recessive mutations in the CFTR gene.

Q: How are trisomies and monosomies related to deletions and duplications respectively? What is the…

A: Trisomy is the condition in which a diploid organism will have one duplicate copy of one of its…

Q: Which of the following is NOT a regulatory DNA sequence? Origin Promoter Repressor

A: A regulatory sequence is defined as a DNA sequence capable enough to affect the expression of…

Q: Which of the following is not one of the ways in which environmental events can influence the…

A: The environment has an effect on our gene expression rather than our DNA gene sequences. Gene…

Q: Which of the following mobile genetic elements is a retrotransposon, making up about 10% of the…

A: A transposon can be defined as the characteristic mobile genetic element. These elements can…

Q: The DNA can be increased in size by only about 5%, representing the addition of only 3 kb of new…

A: Cloning vector Based on lambda bacteriophages: Two problems had to be solved before lambda based…

Q: Which of the following statements is/are TRUE about DNA repair?   Question 24 options:     Ensure…

A: DNA repair It is a collection of processes by which a cell identifies and corrects damage to the…

Viral Replication

The virus is acellular and considered non-living outside the host cell. The replication of the virus occurs only inside the living cells. Only a few genes are present in the smallest virus, whereas many genes are present in the largest virus. These genes encode specific viral proteins.