in dna transcription, how can you tell which is the template strand?
Added by Melissa S.
Step 1
Let's think step by step. Show more…
Show all steps
Your feedback will help us improve your experience
Farhan Anwar and 61 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Question 8: The DNA strand that mRNA is built from is called the template strand because it serves as a template for transcription. The mRNA molecules that are synthesized are complementary and antiparallel to the template strand of DNA and will contain uracil rather than thymine. The strand of DNA not used as a template for transcription is called the non-template strand. Sometimes the non-template strand is referred to as the "coding strand" because it corresponds to the same sequence as the resulting mRNA (which will likely go on to be translated into proteins). The only difference between the non-template strand and the new mRNA strand is instead of thymine, uracil takes its place in the mRNA strand. If the sequence of an mRNA molecule is: 5' AAGUCUACAGCU 3'. Answer the following questions: (a) What is the sequence of the template strand of DNA? (2 marks) The sequence of the template strand of DNA is 5' 3'. (b) What is the sequence of the nontemplate strand of DNA? (2 marks) The sequence of the nontemplate strand of DNA is 5' 3'. Please enter your sequences in the 5' to 3' direction. Deductions will be made if a sequence is inputted in the wrong direction. Carefully check that the sequence you input contains no typographical mistakes.
Farhan A.
The DNA strand that mRNA is built from is called the template strand because it serves as a template for transcription. The mRNA molecules that are synthesized are complementary and antiparallel to the template strand of DNA and will contain uracil rather than thymine. The strand of DNA not used as a template for transcription is called the non-template strand. Sometimes the non-template strand is referred to as the "coding strand" because it corresponds to the same sequence as the resulting mRNA (which will likely go on to be translated into proteins). The only difference between the non-template strand and the new mRNA strand is instead of thymine, uracil takes its place in the mRNA strand. If the sequence of an mRNA molecule is: 5' AAGUCUACAGCU 3'. Answer the following questions: (a) What is the sequence of the template strand of DNA? (2 marks) The sequence of the template strand of DNA is 3' TTCAGATGTCCG 5'. (b) What is the sequence of the nontemplate strand of DNA? (2 marks) The sequence of the nontemplate strand of DNA is 5' AAGTCATGTCGA 3'.
Adi S.
According to the central dogma, double-stranded DNA serves as the template for the production of RNA during transcription. Which of the two DNA strands serves as the template for transcription? Either DNA strand may be used as a template by RNA polymerase, but a single DNA strand oriented in the 3'-5' direction is used as a template each time transcription occurs. The DNA strand oriented in the 5'-3' direction is the only template because only this strand contains the polymerase binding sequences necessary to initiate transcription. Both DNA strands serve as templates simultaneously for RNA polymerase, with continuous transcription on the leading strand and discontinuous transcription on the lagging strand. The DNA strand oriented in the 5'-3' direction is the only template because RNA polymerase synthesizes only in the 5'-3' direction.
Sri K.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD