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.
Q: Which of the following is NOT a direct example of epigenetics? 0a. histone acetylation b.DNA…
A: Epigenetics means the change in the phenotype of an organism without changing its genotype. It means…
Q: Q7
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Q: Which of the following are examples of molecular changes thatcan have an epigenetic effect on gene…
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Q: CpG is an epigenetic term which me a. The binding of the sense cy O b. The binding of cytidine to O…
A: CpG site The CpG sites or CG sites are regions of DNA where Cytosine nucleotide is followed by a…
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Q: epigenetic inheritance.
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Q: Which of the following are affected by changes in DNA methylation? Choose all that apply. The…
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Q: In gene expression, a gene is _________ (translated, transcribed) into mRNA, which is then _________…
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Q: Which of the following statament is NOT TRUE about gene expression?
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Q: Which of the following is not a major mechanism of epigenetic change? a. DNA methylation b.…
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Q: B. Translation of RNA into protein. D. Epigenetic modifications of proteins. C. Specific…
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Q: Epigenetic phenomena involve DNA methylation and a) gene inversions Ob) chromosomal rearrangements…
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A: The correct statement is given below:
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- Which of the following causes epigenetic modifications to DNA that affects gene expression without changing the DNA sequence? Base pair expression. DNA methylation. Mutation in regulatory sites. Gene knockout.Which of the following statament is NOT TRUE about gene expression?a. The expression of genes that code for proteins includes two stages: replication and translationb. Translation is the synthesis of a polypeptide using the information in the mRNA.c. During gene expression, the information encoded in genes is used to make specific polypeptide chains or RNA molecules.d. Gene expression is the process by which DNA directs the synthesis of proteinsWhich of the following are examples of molecular changes thatcan have an epigenetic effect on gene expression?a. Chromatin remodelingb. Covalent histone modificationc. Localization of histone variantsd. DNA methylatione. Feedback loopsf. All of the above
- Epigenetic changes in gene regulation are caused by _ _ _ _ _ _ _ a. missing nucleotides or chromosomes b. modifications to histones and the DNA, but not the nucleotide sequence itself c. mutations of the nucleotide sequenceWhich 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 proteinsEpigenetic changes in gene regulation are caused by ________. missing nucleotides or chromosomes missing nucleotides or chromosomes mutations of the nucleotide sequence mutations of the nucleotide sequence modifications to histones and the DNA, but not the nucleotide sequence itself
- Which of the following types of epigenetic changes may promote cancer?a. DNA methylationb. Covalent modification of histonesc. Chromatin remodelingd. All of the aboveWhich of the following is not a possible outcome of changing the epigenetic code? a) exposure of regulatory region b) binding of transcription factors c) altered gene expression d) repositioning of nucleosomes by polymerasesWhy is the control of gene expression important for cells? Choose one: It ensures the accurate replication of DNA. It prevents mutations from occurring during transcription and translation. • It regulates the synthesis of proteins necessary for cellular functions.
- Which of the following is not an example of epigenetic gene regulation?a. genomic imprinting in mammalsb. X-chromosome inactivation in mammalsc. cell differentiation in animals and plantsd. regulation of the lac operon in E. coli via allolactosee. the effects of toxins in cigarette smoke that alter gene expressionGenes 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.What are epigenetic modifications? a. the addition of reversible changes to histone proteins and DNA b. the removal of nucleosomes from the DNA c. the addition of more nucleosomes to the DNA d. mutation of the DNA sequence
