Which one of the following describes an epigenetic modification?A point mutation in the coding sequence of a gene.A deletion in the regulatory region of a genc.A nonsense mutation in the coding region of a gene.O A methyl group bound to DNA inhibits transcription of a gene.

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Description: Which one of the following describes an epigenetic modification?A point mutation in the coding sequence of a gene.A deletion in the regulatory region of a genc.A nonsense mutation in the coding region of a gene.O A methyl group bound to DNA inhibits

A methyl group bound to DNA inhibit transcription of gene. This sentence denotes an epigenetic…

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Which one of the following describes an epigenetic modification? O A point mutation in the coding sequence of a gene. O A deletion in the regulatory region of a gene. O A nonsense mutation in the coding region of a gene. A methyl group bound to DNA inhibits transcription of a gene.

Which one of the following describes an epigenetic modification? O A point mutation in the coding sequence of a gene. O A deletion in the regulatory region of a gene. O A nonsense mutation in the coding region of a gene. A methyl group bound to DNA inhibits transcription of a gene.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter9: Molecular Biology

Section: Chapter Questions

Problem 11RQ: Post-translational control refers to: a. regulation of gene expression after transcription b....

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Which of the following is NOT true of DNA-methylation? O It is an epigenetic change. O It involves the addition of a methyl group to a DNA molecule. O It causes a gene to not be expressed. O It changes the genetic sequence of DNA.
Which of the following epigenetic changes could lead to reduced transcription of a particular gene?. Please make sure to select all correct answers
Genes can be silenced through epigenetic changes that occur Genes can be silenced through epigenetic changes that occur at CpG islands located in RNA. at the C-terminus of histone tails. at lysines located in the nucleic acids sequence. at regulatory regions in DNA.
The binding of an enhancer O stimulates transcription of a specific gene. O stimulates splicing of a specific mRNA. O stimulates splicing of all MRNAS. O stimulates transcription of all genes. O increases the stability of a specific MRNA.
The following is true about epigenetic gene control: O epigenetic changes to the chromatin may result from childhood development epigenetic changes to the chromatin may result from chemicals in the environment O epigenetic changes to the chromatin may result in cancer O An example of a chromatin change is DNA methylation that prevents gene expression from that area of the DNA
DNA Sequence: TAC TCC GGC TCT CCC AGT TGA ACT Mutated Sequence: TAC TCG GCT CTC CCA GTT GAA CT Original Amino acid: Mutated Amino Acid: What mutation have occurred in the sequence? How does it affect the expression of amino acids?
Which of the following is a method through which cells can control their gene expression? Increase a gene's stability using post-translational modifications Epigenetic modifications of the DNA or histones to regulate DNA avilability phosphorylation of thymidines formation of crosslinks between the DNA strands and the histones
Which of the following is true about epigenetic modifications? -Epigenetic modifications always repress transcription -Epigenetic modifications are irreversible -Epigenetic modifications only occur on the tails of histone proteins -Epigenetic modifications influence the relationship between DNA and histone proteins
Which of the following statament is NOT TRUE about gene expression? Lüffen birini seçin: O a. Gene expression is the process by which DNA directs the synthesis of proteins O b. During gene expression, the information encoded in genes is used to make specific polypeptide chains or RNA molecules. O c. The expression of genes that code for proteins includes two stages: replication and translation O d. Translation is the synthesis of a polypeptide using the information in the MRNA.
Which of the following would be used to describe a gene that is transcriptionally controlled by activator and/or repressor proteins? Constitutive Regulated Environmental-independent. Permanently repressed. Permanently enhanced.
Match each example of mutation to the correct effect on function. Hypomorphic mutation Hypermorphic mutation Antimorphic mutation Neomorphic A deletion results in the loss of part of a protein and the protein retains some of its normal activity. A mutant allele makes a protein with increased cataytic activity. A mutant form of a transcription factor binds new DNA sequences to activate different genes. A mutant from of a receptor protein interferes with the function of the wild-type receptor through heterodimerization.
DNA Sequence: TAC TCC GGC TCT CCC AGT TGA ACT Mutated Sequence: TAC TCC GGC TCT CCC ACT TGA ACT Original Amino acid: Mutated Amino Acid: What type of mutation has occurred in the sequence? How does it affect the expression of amino acids?