ESSENTIALS OF GENETICS-W/MOD.ACCESS
9th Edition
ISBN: 9780134452876
Author: KLUG
Publisher: PEARSON
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Chapter 12, Problem 8PDQ
When the amino acid sequences of insulin isolated from different organisms were determined, some differences were noted. For example, alanine was substituted for threonine, serine was substituted for glycine, and valine was substituted for isoleucine at corresponding positions in the protein. List the single-base changes that could occur in triplets to produce these amino acid changes.
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Chapter 12 Solutions
ESSENTIALS OF GENETICS-W/MOD.ACCESS
Ch. 12 - CASE STUDY | A drug that sometimes works A...Ch. 12 -
CASE STUDY | A drug that sometimes works
A...Ch. 12 -
CASE STUDY | A drug that sometimes works
A...Ch. 12 - HOW DO WE KNOW? In this chapter, we focused on the...Ch. 12 - Review the Chapter Concepts list on p. 215. These...Ch. 12 - In studies of frameshift mutations, Crick,...Ch. 12 -
4. The mRNA formed from the repeating...Ch. 12 - In studies using repeating copolymers, AC......Ch. 12 - Prob. 6PDQCh. 12 - Prob. 7PDQ
Ch. 12 -
8. When the amino acid sequences of insulin...Ch. 12 - Prob. 9PDQCh. 12 - Why doesn't polynucleotide phosphorylase (Ochoa's...Ch. 12 - Refer to Table 12.1. Can you hypothesize why a...Ch. 12 -
12. Predict the amino acid sequence produced...Ch. 12 - A short RNA molecule was isolated that...Ch. 12 - A glycine residue exists at position 210 of the...Ch. 12 - Shown here is a theoretical viral mRNA sequence...Ch. 12 -
16. Most proteins have more leucine than...Ch. 12 - Define the process of transcription. Where does...Ch. 12 - Describe the structure of RNA polymerase in...Ch. 12 - In a written paragraph, describe the abbreviated...Ch. 12 - Messenger RNA molecules are very difficult to...Ch. 12 - One form of posttranscriptional modification of...Ch. 12 - In a mixed copolymer experiment, messages were...Ch. 12 -
23. Shown in this problem are the amino acid...Ch. 12 - Alternative splicing is a common mechanism for...Ch. 12 - The genetic code is degenerate. Amino acids are...
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- Which four different bases can be bound to deoxyribose?arrow_forwardWhy do amino acids other than methionine occur in the Nterminal position of proteins from eukaryotes?arrow_forwardWrite a structural formula for a tetrapeptide composed of phenyl-alanine, glycine, aspartic acid, and histidine in which the phenylalanine is N-terminal and the histidine is C-terminal. How many different tetrapeptides could be written that fit the criteria in this question?arrow_forward
- Z-scale descriptors are also calculated for artificial (synthetic) amino acids. Which of the four following descriptions could correspond to amino-phenylacetate and which to homoarginine? Justify your answer! 1) z1=-3.51 z2=2.93 z3=2.94 2) z1=2.70 z2=3.06 z3=-4.15 3) z1=-3.51 z2=-2.93 z3=2.94 4) z1=2.70 z2=-3.06 z3=arrow_forwardCommercially available high-energy formulas for premature infants are rich in triacylglycerols containing short- and medium-chain fatty acids esterified at the sn-3 position. Why?arrow_forwardIndicate all the possible sequences for a tripeptide containing alanine, glutamine, and methionine; use the standard abbreviation for each amino acid (Ala, Gln, Met).arrow_forward
- What structural relationship is indicated by the term D-sugar? Why are (+) glucose and (-) fructose both classified as D-sugars?arrow_forwardWhat does the high-energy molecules adenosine triphosphate fforms and reduced forms of nicotinamide adenine dinucleotide means?arrow_forwardDescribe the chemical difference between mannose and heptyl alpha-D-mannose. Why does FimH have a higher affinity for heptyl a-D-mannose versus methyl a-D-mannose?arrow_forward
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