THE MOLECULAR BASIS OF INHERITANCE
GENE MUTATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
operator
|
|
|
promoter
|
|
|
enhancer
|
|
|
origin
|
Detailed explanation-1: -The enzyme RNA polymerase, which makes a new RNA molecule from a DNA template, must attach to the DNA of the gene. It attaches at a spot called the promoter.
Detailed explanation-2: -RNA polymerase binds to a sequence of DNA called the promoter, found near the beginning of a gene.
Detailed explanation-3: -The stretch of DNA that is transcribed into an RNA molecule is called a transcription unit. A transcription unit that is translated into protein contains sequence that directs and regulates protein synthesis in addition to coding sequence that is translated into protein.
Detailed explanation-4: -During transcription, the DNA of a gene serves as a template for complementary base-pairing, and an enzyme called RNA polymerase II catalyzes the formation of a pre-mRNA molecule, which is then processed to form mature mRNA (Figure 1).
Detailed explanation-5: -Step 1: Initiation Initiation is the beginning of transcription. It occurs when the enzyme RNA polymerase binds to a region of a gene called the promoter. This signals the DNA to unwind so the enzyme can ‘’read” the bases in one of the DNA strands.