Which of the following genes is believed to have resulted from a favorable mutation, and has been highly conserved for billions of years? A. the gene for antennapedia in fruit flies B. the gene for sickle-cell anemia C. the gene for cystic fibrosis in humans D. the gene for histone H4 E. the gene for hemophilia in humans

Q: Which of the following describes an oncogene Group of answer choices A. a gene that stimulates cell…

A: Cancer is caused by changes in the DNA and is called genetic changes. Cancer is the growth of the…

Q: If a mutation deletes the start codon in a eukrayotic gene, which of the following most accurately…

A: The start codon is a three-nucleotide long sequence in a gene that is responsible for the initiation…

Q: Bishop and Varmus’s experiment was a landmark work in cancer biology. What was the question facing…

A: Normal cells become abnormal when they divide uncontrollably and have the potential to invade nearby…

Q: If a mutation deletes the promoter in a eukrayotic gene, which of the following most accurately…

A: mRNA means messenger RNA. mRNA forms from the template DNA strand. The template DNA strand is used…

Q: Which of the following gene mutations is most likely tohave the most severe impact on gene…

A: Eukaryotic genome is usually larger than prokaryotic genome. This is because of the presence of…

Q: . Show (on the image) 3 steps that must be taken to produce a mature mRNA molecule from this pre-…

A: The genetic material which is the DNA undergoes the process of replication to produce exact copies…

Q: A geneticist induces a mutation in eukaryote cells. The mutation results in an inability to form the…

A: Mutation results in alteration of a nucleotide sequence of DNA which caused due to the mistake in…

Q: a. Show (on the image) 3 steps that must be taken to produce a mature mRNA molecule from this pre-…

A: RNA Splicing: A newly created precursor messenger RNA (pre-mRNA) transcript is converted into a…

Q: A mutation changes a codon that specifies tyrosine into a stopcodon. This type of mutation is aa.…

A: The mutation is the alteration in the structure and sequence of the DNA which is the genetic…

Q: Which of the following incorrectly describes the difference between eukaryotic and prokaryotic gene…

A: Prokaryotic organisms are single-celled creatures that lack the cell nucleus, and their DNA…

Q: Several new cancer drugs inhibit the enzymes that either put acetyl groups on histones or take them…

A: Cancer in simple term can be referred to a set of diseases which are caused by the production of an…

Q: Which of the following possibilities could explain how PcGcomplexesare able to silence genes?a. The…

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Q: A mutation in a coding region of DNA, but that does not change the amino acid, would almost…

A: *! silent mutation is due to a point mutation that gives different codon transcribed as a synonymous…

Q: A SNV mutation that results in an early stop codon is called: A. silent mutation B. silencing…

A: A mutation occurs when there is a change in a DNA sequence. This may result from an error during the…

Q: Sickle cell disease is caused by a substitution in the beta globin gene. As a result, one amino acid…

A: Normal RBC is a biconcave disc shape structure without any nucleus and have Cytoplasm that possess…

Q: Give two DIFFERENT examples of how the following can occur: a. A point mutation in an exon that is…

A: Silent mutation - Silent mutations are mutations in DNA that do not have an observable effect on the…

Q: We use the Alu element polymorphism to trace each student's ancestry. This element is present in an…

A: Introduction  Polymorphism refers to the occurrence of multiple genetic variants, or alleles, within…

Q: Which of the following is the action of SnRNA (snurps)? a. Knocks out a portion of the gene b.…

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Q: A scientist is curious about the effects of diet on the gut length of spadefoot toad tadpoles.  She…

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Q: Now the gene sequence was changed in a different way, such that instead of producing a mRNA with the…

A: Mutations are abrupt changes in the DNA sequence that may or may not change the amino acid sequence…

Q: The following is the DNA sequence of the entire protein-coding region for some small gene in a…

A: The flow of information from DNA to RNA is known as Transcription. (a) Transcription: It is a…

Q: During which stage of translation are the small and large ribosomal subunits recruited? a.…

A: Protein synthesis may be broken down into the same three processes as mRNA synthesis: initiation,…

Q: A transcription factor (protein - orange/green) is bound to a promoter of a gene (DNA - blue) it…

A: The control of gene expression is a complex process that involves the interaction of numerous…

Q: A SNV mutation that results in no change in the amino acid sequence is called:  A. silent mutation…

A: A mutation is a permanent alteration in the DNA sequence of an organism's genome. DNA, or…

Q: DNA methylation prevents gene expression.  Methylation and de-methylation are stimulated by a…

A: Methylation  Methylation is metabolic process takes place on the DNA. The methylation of DNA control…

Q: DNA methylation is A. heritable and generally activates gene expression. B. heritable and…

A: The gene expression is the production of mRNA from the DNA that is known as transcription. This…

Q: Which of the following order of events correctly depicts the Central Dogma as it would occur in an…

A: The Central Dogma of molecular biology, first proposed by Francis Crick in 1958, represents the flow…

Q: You are studying a protein that you observe to be located in the ER and Golgi. You hypothesize that…

A: Introduction :- ER and Golgi are membrane bound organelles, which are present in the cytoplasm of a…

Q: In which of the following does nitrogenous base pairing (base complementarity via hydrogen bonds)…

A: Nitrogenous base pairing can include DNA-DNA, DNA-RNA, RNA-RNA pairing. Both DNA and RNA are made up…

Q: The following type of mutation in a proto-oncogene may cause cancer in human: A. Translocation of…

A: Cancer is a condition in which some cells in the body develop uncontrollably and spread to other…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.