Why is it favorable to have functionally related genes on one transcription unit?
Why is it favorable to have functionally related genes on one transcription unit?
Homework Answers
ANSWER :
If a group of functionally related genes present on one transcription unit then they most favourable coordinately controlled via a single "on-off" switch.
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Why is it favorable to have functionally related genes
on one transcription unit?
Why are related genes transcribed together? Why is transcription regulated? RNA Polymerase does not have proofreading...
Why are related genes transcribed together? Why is transcription regulated? RNA Polymerase does not have proofreading mechanism and the error rate is 1 per 104~105, why is fidelity not as important as during DNA replication? Which RNAs are not translated to proteins?
QUESTION 1 Hox genes are genes that code for transcription factors. What do transcription factors do?...
QUESTION 1 Hox genes are genes that code for transcription factors. What do transcription factors do? A. Bind to DNA to make it available for transcription B. Make up specific body parts C. Activate ribosomes QUESTION 2 Genes that need to be turned on at the same time (for example, the genes that encode the proteins that build toes) will all respond to the same transcription factor. A. True B. False QUESTION 3 Hox genes are sometimes called "master switches"....
Which of the following mechanisms is (are) used to coordinate the expression of multiple, related genes...
Which of the following mechanisms is (are) used to coordinate the expression of multiple, related genes in eukaryotic cells? a. The genes are organised into an operon, allowing them to be co-ordinately controlled as a single unit. b. The genes have enhancers with similar control elements, which allows appropriate activators to turn on their transcription at the same time. c. A single repressor is able to turn off several related genes. d. Environmental signals enter the cell and bind directly...
Transcriptional Polarity (thought problem) Happens in operons à transcription of “later” genes depends on the translation...
Transcriptional Polarity (thought problem) Happens in operons à transcription of “later” genes depends on the translation of the ones before them –A nonsense mutation (“early stop”) in the first gene can prevent not just that product, but all of the other gene products from being made •This effect requires that transcription and translation be coupled •Genes on a polycistronic mRNA all have their own translation start and stop sites though. If the RNA encoding those other genes is present, they...
Transcription of rRNA genes captured in a Transmission Electron Micrograph Figure 7-8 Essential C...
Transcription of rRNA genes captured in a Transmission Electron Micrograph Figure 7-8 Essential Cell Biology, 4th ed.(O Garland Science 2014) Which direction is transcription proceeding? Left to right, or right to left? Why are the RNA transcripts shorter than the DNA segments that encode them? 1. 2.
Transcription of rRNA genes captured in a Transmission Electron Micrograph Figure 7-8 Essential Cell Biology, 4th ed.(O Garland Science 2014) Which direction is transcription proceeding? Left to right, or right to left? Why...
6. A mutation in one gene knocks out transcription of most mRNA genes in eukaryotic cells,...
6. A mutation in one gene knocks out transcription of most mRNA genes in eukaryotic cells, what does this gene encode? 7. If you were to study where P53 regulates an oncogene, you will begin your study by examining whether P53 binds to the promoter of the oncogene; a. Briefly describe the role of transcription factor P53. b. Which methods can be used for your study and what are the expected results?
If two distantly related organisms have regions of conserved synteny, what does this mean? If two...
If two distantly related organisms have regions of conserved
synteny, what does this mean?
If two distantly related organisms have regions of conserved synteny, what does this mean? Choose one: O A. The genes examined in the two species are present in the same order as in their most recent common ancestor. O B. The genes examined in the two species are nonhomologous to each other. O C. The genes examined in the two species are under the control of...
Which of the following might decrease the transcription of all genes in a bacterial cell? Select...
Which of the following might decrease the transcription of all genes in a bacterial cell? Select one: a. a decrease in the amount of sigma factor b. a decrease in the amount of RNA polymerase II c. a mutation that introduced extensive sequence changes into the DNA that precedes a single gene’s transcription start site d. a mutation that introduces a stop codon into the DNA that precedes the gene’s coding sequence
49. Which one of these enzymes is involved in the process of transcription? helicase primase gyrase...
49. Which one of these enzymes is involved in the process of transcription? helicase primase gyrase DNA polymerase RNA polymerase nearumning genes have at their terminals
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...
Why are related genes transcribed together? Why is transcription regulated? RNA Polymerase does not have proofreading mechanism and the error rate is 1 per 104~105, why is fidelity not as important as during DNA replication? Which RNAs are not translated to proteins?
Transcription of rRNA genes captured in a Transmission Electron Micrograph Figure 7-8 Essential Cell Biology, 4th ed.(O Garland Science 2014) Which direction is transcription proceeding? Left to right, or right to left? Why are the RNA transcripts shorter than the DNA segments that encode them? 1. 2.
Transcription of rRNA genes captured in a Transmission Electron Micrograph Figure 7-8 Essential Cell Biology, 4th ed.(O Garland Science 2014) Which direction is transcription proceeding? Left to right, or right to left? Why...
If two distantly related organisms have regions of conserved
synteny, what does this mean?
If two distantly related organisms have regions of conserved synteny, what does this mean? Choose one: O A. The genes examined in the two species are present in the same order as in their most recent common ancestor. O B. The genes examined in the two species are nonhomologous to each other. O C. The genes examined in the two species are under the control of...
49. Which one of these enzymes is involved in the process of transcription? helicase primase gyrase DNA polymerase RNA polymerase nearumning genes have at their terminals
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...
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