WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 6, Problem 4SA
Summary Introduction
To review:
Why “junk” DNA is a poor description of the non-coding regions of DNA in humans.
Introduction:
Non-coding DNA does not participate in the synthesis of any proteins.
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This is part of the Escherichia coli DNA sequence that contains an inverted repeat.
(Note: top strand is the coding strand).
5'-AACGCATGAGAAAGCCCCCCGGAAGATCACCTTCCGGGGGCTTTATATAATTAGC-3'
3'-TTGCGTACTCTTTCGGGGGGCCTTCTAGTGGAAGGCCCCCGAAATATATTAATCG-5'
Draw the structure of hairpin loop that will be formed during the end of transcription.
in the DNA of certain bacterial cells, 13% of the nucleotides are adenine. What are the percentages of the other nucleotides?
As you should recall, DNA, when not being actively transcribed, has a double helical structure. This portion of the DNA has had the two strands separated in preparation of transcribing for a needed protein. The following is one of the two complimentary strands of DNA:
3' - AACCAGTGGTATGGTGCGATGATCGATTCGAGGCTAAAATACGGATTCGTACGTAGGCACT - 5'
Q: Based on written convention, i.e. the 3'-5' orientation, is this the coding strand or the template strand? ______________________________
Q: Assuming this strand extends from base #1 to #61 (going left to right), interpret the correctly transcribed mRNA and translated polypeptide for bases 24 - 47:
mRNA: ___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-___-
polypeptide chain: ________--________--________--________--________--________--________--________
Chapter 6 Solutions
WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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