Concept explainers
(a)
Interpretation: Among the given base pairing situations, whether the base paring includes two DNA strands, a DNA strand and a RNA strand, or it might includes either two DNA strands or a DNA strand and an RNA strand has to be predicted.
Concept introduction: DNA contains double helical strands along with the complementary base pairs. The four complementary bases of DNA are adenine (A), thymine (T), guanine (G) and cytosine (C). RNA contains the complementary base pairs. The four complementary bases of RNA are adenine (A), uracil (U), guanine (G) and cytosine (C).
(b)
Interpretation: Among the given base pairing situations, whether the base paring includes two DNA strands, a DNA strand and a RNA strand, or it might includes either two DNA strands or a DNA strand and an RNA strand has to be predicted.
Concept introduction: DNA contains double helical strands along with the complementary base pairs. The four complementary bases of DNA are adenine (A), thymine (T), guanine (G) and cytosine (C). RNA contains the complementary base pairs. The four complementary bases of RNA are adenine (A), uracil (U), guanine (G) and cytosine (C).
(c)
Interpretation: Among the given base pairing situations, whether the base paring includes two DNA strands, a DNA strand and a RNA strand, or it might includes either two DNA strands or a DNA strand and an RNA strand has to be predicted.
Concept introduction: DNA contains double helical strands along with the complementary base pairs. The four complementary bases of DNA are adenine (A), thymine (T), guanine (G) and cytosine (C). RNA contains the complementary base pairs. The four complementary bases of RNA are adenine (A), uracil (U), guanine (G) and cytosine (C).
(d)
Interpretation: Among the given base pairing situations, whether the base paring includes two DNA strands, a DNA strand and a RNA strand, or it might includes either two DNA strands or a DNA strand and an RNA strand has to be predicted.
Concept introduction: DNA contains double helical strands along with the complementary base pairs. The four complementary bases of DNA are adenine (A), thymine (T), guanine (G) and cytosine (C). RNA contains the complementary base pairs. The four complementary bases of RNA are adenine (A), uracil (U), guanine (G) and cytosine (C).
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Chapter 22 Solutions
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- The base sequences in mRNA that code for certain amino acids are Glu: GAA, GAG Val: GUU, GUC, GUA, GUG Met: AUG Trp: UGG Phe: UUU, UUC Asp: GAU, GAC These sequences are complementary to the sequences in DNA. a. Give the corresponding sequences in DNA for the amino acids listed above. b. Give a DNA sequence that would code for the peptide trp-glu-phe-met. c. How many different DNA sequences can code for the tetrapeptide in part b? d. What is the peptide that is produced from the DNA sequence TACCTGAAG? e. What other DNA sequences would yield the same tripeptide as in part d?arrow_forwardWhich base is found in DNA but not in RNA? a. thymine b. cytosine c. guanine d. adeninearrow_forwardHuman brain natriuretic peptide (BNP) is a small peptide of 32 amino acids used in the treatment of congestive heart failure. How many nitrogen bases are present in the DNA that codes for BNP?arrow_forward
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