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Many genes in both prokaryotes and eukaryotes contain many sequences that can cause pauses or prematurely terminate transcription. Nevertheless, the genes within a cell normally produces multiple RNAs that may be thousands of nucleotides long without pausing or terminating prematurely. However, when a single round of transcription occurs on such templates in a test tube, RNA synthesis is frequently interrupted by pauses and premature terminations, which reduces the transcriptional rate and frequently shorten the length of the mRNA molecules. Most pauses and terminations occur when RNA polymerase temporarily backtracks for one or two nucleotides along the DNA. Experimental findings have demonstrated that most transcriptional delays and premature terminations disappear if several RNA polymerases are transcribing the DNA simultaneously. Propose an explanation for faster transcription and longer mRNA when the template DNA is being transcribed by multiple RNA polymerases.
Read the scenario below and then analyze what is wrong with the hypothesis given. Renee has noticed that a few of her friends have better eyesight than she does. She watches what they eat and then decides to come up with a hypothesis. Her hypothes..
The replication of DNA is a complicated process during which DNA is occasionally damaged. Discuss when in the cell cycle DNA is assessed for damage and predict what effect DNA damage would have on the cell cycle.
What progeny will result from the cross of blue with blue. Which would yield blue fowl, how must you proceed.
dangerously thin a case study on the genetic codeat 65 years old henry blake was in excellent health and enjoying his
What is the expected evolutionary significance of genetic recombination?
What are the hypotheses that explain how/where anatomically modernhumans evolved. If possible, could you explain one or two of these hypotheses ?
What is the main function of ribosomes in a typical animal cell?
The two main organ systems affected by cystic fibrosis are the respiratory and digestive systems. What is the common ground between these two seemingly dissimilar systems? Why are both affected in cystic fibrosis?
Person and the situation interact to shape a person's goals, thoughts, feelings, and behaviors - Different persons respond differently to the same situation and situations choose the person.
How does your body cope with the Hiv virus? What fluid fills the anterior chamer of the eye vitreous humor or aqueous homor
Autophagy is negatively regulated by a complex called mTorc1. When researchers inhibited mTORC1 , the genes related to autophagy(ATGs) were not expressed.What does this suggest about the regulation of ATG expression?
Ralph is taking scuba diving classes, and is warned not to hold his breath as ascending from depth but to continuously release air from his mouth. What is the basis of this instruction and what is risk if it is ignored.
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