LAUNCHPAD F/WHAT IS LIFE
4th Edition
ISBN: 9781319231897
Author: PHELAN
Publisher: Macmillan Higher Education
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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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Check out a sample textbook solutionStudents have asked these similar questions
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
LAUNCHPAD F/WHAT IS LIFE
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- In sea urchin DNA, which is double stranded, 17.5percent of the bases were shown to be cytosine (C). Whatpercentages of the other three bases are expected to bepresent in this DNA?arrow_forwardWhat part(s) of a nucleotide (namely, phosphate, sugar, and/or base) is/are found in the major and minor grooves of double-stranded DNA, and what part(s) is/are found in the DNA backbone? If a DNA-binding protein does not recognize a specific nucleotide sequence, do you expect that it binds tothe major groove, the minor groove, or the DNA backbone? Explain.arrow_forwardWhat is the conformation of the glycosidic bond (i.e. orientation of the nucleobase relative to the the sugar) in the B-form of DNA? syn anti alpha heteroarrow_forward
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