Comparing the -10 regions of two E. coli promoters which have identical -35 regions revealed the sequence TATAAT for the first and GATACT for the second one. Why does the first promoter cause a higher transcription rate than the second one? a. The transcription rate from the first promoter will be higher, because RNA polymerase will bind TATAAT with a higher affinity than GATACT. b. It will be higher, because formation of the open promoter complex is more easily achieved with TATAAT than with GATACT. c. It will be higher, because TATAAT of the -10 region is transcribed into UAUAAU, which forms fewer hydrogen bonds with the template strand than GAUACU. d. a and b, but not c e. a, b, and c
Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
Comparing the -10 regions of two E. coli promoters which have identical -35 regions revealed the sequence TATAAT for the first and GATACT for the second one. Why does the first promoter cause a higher transcription rate than the second one?
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