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Enhancers can regulate genes from a distance, and yet they promoters influence of only some genes...
1. trans-acting factors are able to regulate target genes from any chromosome, whereas cis-acting elements can...
1. trans-acting factors are able to regulate target genes from any chromosome, whereas cis-acting elements can only regulate genes located in the same chromosome. a. True only in operons. In Eukaryotic systems, trans-acting factors only regulate genes in the same chromosome. b. True only in Eukaryotes. Prokaryotes don’t have cis-acting elements. c. True for any organism. d. False. The statement is erroneous 2. Unlike activators, repressors never affect chromatin structure. Repressors inhibit transcription only by binding to the binding sites...
Genes can have more than one enhancer. Typically each enhancer acts independently and only one enhancer...
Genes can have more than one enhancer. Typically each enhancer
acts independently and only one enhancer needs to be active under a
given condition for the gene to be transcribed. In addition,
different enhancers typically are active under different
conditions, in different cell types or at different times during
development. Consider a gene that is not transcribed in the absence
of estrogen or progesterone, and is transcribed in the presence of
either estrogen, progesterone or both. This gene contains two...
You are conducting an experiment identifying enhancers that regulate the expression of a gene that codifies...
You are conducting an experiment identifying enhancers that
regulate the expression of a gene that codifies for a protein that
participates in cell division. The gene is called Mitosis
Regulatory Protein A or MRPA. The complete DNA sequences
for the MRPA promoter and coding region have been
identified. However, it is unknown if MRPA has enhancers
regulating its transcription. To answer this question your lab
first produced a transgenic cell line where GFP has been inserted
as a reporter gene....
Yet, all the cells in your body contain the same genes (and same alleles). The difference...
Yet, all the cells in your body contain the same
genes (and same alleles). The difference across cell types
is that genes get selectively expressed (turned on or off)
based on the proteins needed for cellular function given their
environment.
Select which statement explains the reason why hair does not
normally grow on your muscle cells.
a.
Muscle cells have the gene for keratin, but do not express
it
b.
Muscle cells do not have the gene for keratin and...
Question 1 Match the term with the best definition or description; most topics relate to the...
Question 1 Match the term with the best definition or description; most topics relate to the regulation of gene expression. General type of protein which will increase transcription rates when it attaches to a site A. Factor connected to a particular gene - B. Co-repressor C. Enhancer D. Promoter E. Structural F. Intron G. Activator H. Operator I. Basal transcription J. Glucocorticoid receptor K. Sigma factor L. Mediator M. Inducer N. TATA box O. Repressor The rates of mRNA produced...
PLEASE ANSWER ALL THE QUESTIONS: 1.What is true of tRNA (transfer RNA)? A they contain an...
PLEASE ANSWER ALL THE QUESTIONS: 1.What is true of tRNA (transfer RNA)? A they contain an anti-codon B they carry an amino acid C they can interpret the genetic code D all of these are true 2. How can transcription factors bound to distant enhancers influence gene expression? A the transcription factors can slide along the DNA until they get to the gene's promoter B DNA can loop, bringing these proteins into contact with the gene's promoter C both of...
Why would changes in the genes for transcription factors be expected to generate major phenotypic differences?...
Why would changes in the genes for transcription factors be expected to generate major phenotypic differences? They are extremely powerful genes. They can affect the expression of small numbers of other genes. Their gene products are remarkably stable. Their gene products normally denature more rapidly than other gene products. They can affect the expression of large numbers of other genes. Which enzyme, also responsible for siRNA formation, carves miRNAs from their double-stranded, fold- back RNA precursor (pre-miRNA)? Dicer ribonuclease RNA...
Need help filling in the chart and answering the questions that go along with it. I...
Need help filling in the chart and answering the questions
that go along with it. I have added the procedure and the
instructions as well as the "results" that are supposed to be used
to fill in the chart. Thank you!
We were unable to transcribe this imageTABLE 8-1 Cast of Characters and a Legend of Abbreviations Name Symbol Function in This Experiment Green fluorescent protein GFP It serves as an indicator of successful transformation and gene transcription expression in...
Genes can have more than one enhancer. Typically each enhancer
acts independently and only one enhancer needs to be active under a
given condition for the gene to be transcribed. In addition,
different enhancers typically are active under different
conditions, in different cell types or at different times during
development. Consider a gene that is not transcribed in the absence
of estrogen or progesterone, and is transcribed in the presence of
either estrogen, progesterone or both. This gene contains two...
You are conducting an experiment identifying enhancers that
regulate the expression of a gene that codifies for a protein that
participates in cell division. The gene is called Mitosis
Regulatory Protein A or MRPA. The complete DNA sequences
for the MRPA promoter and coding region have been
identified. However, it is unknown if MRPA has enhancers
regulating its transcription. To answer this question your lab
first produced a transgenic cell line where GFP has been inserted
as a reporter gene....
Yet, all the cells in your body contain the same
genes (and same alleles). The difference across cell types
is that genes get selectively expressed (turned on or off)
based on the proteins needed for cellular function given their
environment.
Select which statement explains the reason why hair does not
normally grow on your muscle cells.
a.
Muscle cells have the gene for keratin, but do not express
it
b.
Muscle cells do not have the gene for keratin and...
Question 1 Match the term with the best definition or description; most topics relate to the regulation of gene expression. General type of protein which will increase transcription rates when it attaches to a site A. Factor connected to a particular gene - B. Co-repressor C. Enhancer D. Promoter E. Structural F. Intron G. Activator H. Operator I. Basal transcription J. Glucocorticoid receptor K. Sigma factor L. Mediator M. Inducer N. TATA box O. Repressor The rates of mRNA produced...
Why would changes in the genes for transcription factors be expected to generate major phenotypic differences? They are extremely powerful genes. They can affect the expression of small numbers of other genes. Their gene products are remarkably stable. Their gene products normally denature more rapidly than other gene products. They can affect the expression of large numbers of other genes. Which enzyme, also responsible for siRNA formation, carves miRNAs from their double-stranded, fold- back RNA precursor (pre-miRNA)? Dicer ribonuclease RNA...
Need help filling in the chart and answering the questions
that go along with it. I have added the procedure and the
instructions as well as the "results" that are supposed to be used
to fill in the chart. Thank you!
We were unable to transcribe this imageTABLE 8-1 Cast of Characters and a Legend of Abbreviations Name Symbol Function in This Experiment Green fluorescent protein GFP It serves as an indicator of successful transformation and gene transcription expression in...
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