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Which of the following statements about chromatin remodeling is incorrect? Select one: O a. Chromatin remodeling...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
Which statements about the modification of chromatin structure in eukaryotes are true? 1.DNA is not transcribed...
Which statements about the modification of chromatin structure in eukaryotes are true? 1.DNA is not transcribed when chromatin is packaged tightly in a condensed form 2.Some forms of chromatin modification can be passed on to future generations of cells 3.Acetylation of histone tails in chromatin allows access to DNA for transcription 4.Acetylation of histone tails is a reversible process. 5. Methylation of histone tails in chromatin can promote condensation of the chromatin 6. Deacetylation of histone tails in chromatin loosens...
Which statements about the modification of chromatin structure in eukaryotes are true? 2 pts a. Acetylation...
Which statements about the modification of chromatin structure in eukaryotes are true? 2 pts a. Acetylation of histone tails in chromatin allows access to DNA for transcription. b. Histone proteins are always permanently placed along a DNA sequence but the binding to DNA can be loosened. c. Methylation of DNA is associated with the gene activation. d. Acetylation of histone tails is a reversible process. e. Some forms of chromatin modification can be passed on to future generations of cells.
O binding to estrogen and preventing it from binding to its receptor and exerung 7. Which...
O binding to estrogen and preventing it from binding to its receptor and exerung 7. Which of the following is NOT true regarding the differences between gene transcription in eukaryotes and prokaryotes? O Most eukaryotes use multiple transcription factors rather than single transcription factors O Most eukaryotes have regulatory sites that are close to their promoters. 0 Prokaryotic transcription factors usually interact directly with RNA polymerase while eukaryotic transcription factors do not. O Most prokaryotes transcribe multiple genes under the...
Which of the following is not true regarding regulation of gene expression in eukaryotes? In eukaryotic...
Which of the following is not true regarding regulation of gene expression in eukaryotes? In eukaryotic cells, transcriptional activators often work by recruiting the transcriptional macinery to gene promoters DNA methylation is an example of an epigenetic mark that can be inherited Acetylation of histones can result in a more open chromatin structure to allow transcription to occur Different genes can be turned off or on between different organs or stages of development Transcription factor DNA sequences are bound by...
2.5 pts D Question 27 Which of the following statements is FALSE? o In Archaea there...
2.5 pts D Question 27 Which of the following statements is FALSE? o In Archaea there is only one turn of DNA around a nucleosome comprised of the histone H3-H4 tetramer Modifications of histone H3 tails at the K9 position can result in either repression or gene activation, depending of the type of modification. O There are 4 copies of each histone, including H1, in the eukaryotic nucleosome. Archaea have no histone tails since there are no higher orders of...
33. Which of the following conditions are necessary for a gene to be expressed? A. condensed...
33. Which of the following conditions are necessary for a gene to be expressed? A. condensed chromatin with DNA tightly coiled around nucleosomes B. open chromatin making the gene available for transcription C. specific signals from the environment D. active retrotransposons E. Both A and C are true F. Both B and C are true G. all of the above 34. Which of the following histone modifications results in more open chromatin? A. methylation B. acetylation C. restriction enzyme digest...
QUESTION2 Which of the following statements is TRUE? O DNADNA hybrids and RNADNA hybrids are always...
QUESTION2 Which of the following statements is TRUE? O DNADNA hybrids and RNADNA hybrids are always antiparallel O DNA is replicated using the template strand as the template but RNA is transcribed using the sense (or coding) strand as the template. O Both DNA and RNA polymerization require a primer O Introns get spliced out of DNA and out of pre-mRNA QUESTION 3 0. Which of the following statements is FALSE? O Only Eukaryote genes have an A/T rich core...
Which of the following forms of mutagenesis is not appropriate for a forward genetics experiment? a)...
Which of the following forms of mutagenesis is not appropriate for a forward genetics experiment? a) Ionizing radiation such as X-rays b) Creating a chimeric reporter gene to determine where in the organism a candidate regulatory sequence drives expression. c) Using transposons d) Chemical EMS mutagenesis In the course of evolution, the most common source of new genes in eukaryotes has been? a) Robertsonian translocation b) DNA duplication c) Alternative splicing d) Reverse translation e) Whole genome duplication Genes that...
Which of the following statements about Huntington's is true? You can retry this question, the average...
Which of the following statements about Huntington's is true? You can retry this question, the average of your two answers is recorded. You should see feedback if you get a question wrong. O a. The mutated allele(s) has/have lost the function of keeping brain cells healthy, and is/are therefor a dominant disease O b. Huntington is a very rare and therfor recessive. c. Huntington strikes people after reproductive age and is therefor dominant. d. The mutated allele(s) has/have gained the...
Regulation of Gene Expression in Eukaryotes Part A -Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are true? Select all that apply. View Available Hint(s) Acetylation of histone tails is a reversible process Some forms of chromatin modification can be passed on to future generations of cells. DNA is not transcribed when chromatin is packaged tightly in a condensed form. O Acetylation of histone tails in chromatin allows access to DNA for transcription. Deacetylation...
O binding to estrogen and preventing it from binding to its receptor and exerung 7. Which of the following is NOT true regarding the differences between gene transcription in eukaryotes and prokaryotes? O Most eukaryotes use multiple transcription factors rather than single transcription factors O Most eukaryotes have regulatory sites that are close to their promoters. 0 Prokaryotic transcription factors usually interact directly with RNA polymerase while eukaryotic transcription factors do not. O Most prokaryotes transcribe multiple genes under the...
2.5 pts D Question 27 Which of the following statements is FALSE? o In Archaea there is only one turn of DNA around a nucleosome comprised of the histone H3-H4 tetramer Modifications of histone H3 tails at the K9 position can result in either repression or gene activation, depending of the type of modification. O There are 4 copies of each histone, including H1, in the eukaryotic nucleosome. Archaea have no histone tails since there are no higher orders of...
33. Which of the following conditions are necessary for a gene to be expressed? A. condensed chromatin with DNA tightly coiled around nucleosomes B. open chromatin making the gene available for transcription C. specific signals from the environment D. active retrotransposons E. Both A and C are true F. Both B and C are true G. all of the above 34. Which of the following histone modifications results in more open chromatin? A. methylation B. acetylation C. restriction enzyme digest...
QUESTION2 Which of the following statements is TRUE? O DNADNA hybrids and RNADNA hybrids are always antiparallel O DNA is replicated using the template strand as the template but RNA is transcribed using the sense (or coding) strand as the template. O Both DNA and RNA polymerization require a primer O Introns get spliced out of DNA and out of pre-mRNA QUESTION 3 0. Which of the following statements is FALSE? O Only Eukaryote genes have an A/T rich core...
Which of the following statements about Huntington's is true? You can retry this question, the average of your two answers is recorded. You should see feedback if you get a question wrong. O a. The mutated allele(s) has/have lost the function of keeping brain cells healthy, and is/are therefor a dominant disease O b. Huntington is a very rare and therfor recessive. c. Huntington strikes people after reproductive age and is therefor dominant. d. The mutated allele(s) has/have gained the...
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