Could quantitative PCR, which uses a DNA-binding dye, to show how many copies of the target DNA sequence could be used to quantify the amount of mRNA in a cell? Would you expect that a metabolically active tissue such as the liver would show more cDNA copies in such a method, compared to less metabolically active tissues such as skin cells? One reason that the types and amounts of mRNAs are quantified in different tissue types is to compare which genes are activated and which are inactive.  It used to be thought that any gene that was transcribed was automatically translated. The discovery of RNA-degrading systems shows that the real situation in cells is more complemented. Do you believe that a larger amount of mRNA of a given type, say for alpha hemoglobin in immature red blood cells is a reliable indicator that more alpha hemoglobin protein will be made in those cells?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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  • Could quantitative PCR, which uses a DNA-binding dye, to show how many copies of the target DNA sequence could be used to quantify the amount of mRNA in a cell? Would you expect that a metabolically active tissue such as the liver would show more cDNA copies in such a method, compared to less metabolically active tissues such as skin cells?
  • One reason that the types and amounts of mRNAs are quantified in different tissue types is to compare which genes are activated and which are inactive.  It used to be thought that any gene that was transcribed was automatically translated. The discovery of RNA-degrading systems shows that the real situation in cells is more complemented. Do you believe that a larger amount of mRNA of a given type, say for alpha hemoglobin in immature red blood cells is a reliable indicator that more alpha hemoglobin protein will be made in those cells?

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