ESSENTIALS OF GENETICS ALC & MOD MSTG/ET VP
1st Edition
ISBN: 9780134452890
Author: KLUG
Publisher: Pearson Education
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Textbook Question
Chapter 13, Problem 9PDQ
Explain why the one-gene:one-enzyme hypothesis is no longer considered to be totally accurate.
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Explain why the one-gene:one-enzyme hypothesis is no longerconsidered to be totally accurate.
Explain the one-gene:one-enzyme hypothesis. ?
Over several years, researchers learned more about proteins and the genes which code for them, the findings of which lead them to revise the original one gene-one enzyme hypothesis. Which of the following is NOT one of the findings which led to revision?
a.
many genes code can code for RNA molecules which never go on to produce a protein at all
b.
oftentimes, many genes are required to produce a single protein, where one gene produces one polypeptide and many polypeptides together make the single protein
c.
in addition to enzymes, gene products also include non-enzyme proteins like keratin and insulin
d.
a single gene produces one specific enzyme
e.
a single gene may code for multiple different (closely related) polypeptides
Chapter 13 Solutions
ESSENTIALS OF GENETICS ALC & MOD MSTG/ET VP
Ch. 13 - CASE STUDY | Crippled ribosomes Diamond Blackfan...Ch. 13 - CASE STUDY | Crippled ribosomes Diamond Blackfan...Ch. 13 - Prob. 3CSCh. 13 -
HOW DO WE KNOW?
1. In this chapter, we focused on...Ch. 13 - Review the Chapter Concepts list on p. 238. These...Ch. 13 - List and describe the role of all molecular...Ch. 13 - Contrast the roles of tRNA and mRNA during...Ch. 13 - Francis Crick proposed the adaptor hypothesis for...Ch. 13 -
6. During translation, what molecule bears the...Ch. 13 - Summarize the steps involved in charging tRNAs...
Ch. 13 - Each transfer RNA requires at least four specific...Ch. 13 -
9. Explain why the one-gene:one-enzyme hypothesis...Ch. 13 - Prob. 10PDQCh. 13 - Prob. 11PDQCh. 13 - Prob. 12PDQCh. 13 - Assuming that each nucleotide is 0.34 nm long in...Ch. 13 - Review the concept of colinearity in Section 12.5...Ch. 13 -
15. In your opinion, which of the four levels of...Ch. 13 -
16. List and describe the function of as many...Ch. 13 - How does an enzyme function? Why are enzymes...Ch. 13 -
18. Shown in the following table are several...Ch. 13 -
19. Three independently assorting genes are known...Ch. 13 -
20. How would the results in cross (a) of Problem...Ch. 13 - A series of mutations in the bacterium Salmonella...Ch. 13 -
22. The emergence of antibiotic-resistant strains...
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- Why is the One-Gene-One Protein Hypothesis now replaced by the One-Gene-One-Polypeptide Hypothesis?arrow_forwardExplain why release factors are called “molecular mimics.”arrow_forwardBeadle and Tatum's experiments led to the "one gene - one enzyme (protein)" hypothesis. In subsequent years, many exceptions to this hypothesis were noted. A molecule of hemoglobin fails to support this hypothesis for which of the following reasons? n eukaryotes, one gene can code form multiple isoforms of a polypeptide. The functional hemoglobin protein is made from multiple polypeptides. Not all enzymes are proteins. Not all genes encode proteins.arrow_forward
- Many aspects of gene function can be nicely explained with the one-gene-one-enzyme hypothesis, which states that a gene controls the production of an enzyme. Which of the following findings about gene expression, though, requires an expansion of this simple concept? Choose an answer below: Non-enzyme proteins are made from genes too. Some genes code for RNA molecules only. Enzymes composed of different polypeptides are coded for by more than one gene. a and c, but not b a, b, and carrow_forwardExplain briefly the hershey-chase experiment?arrow_forwardDescribe the Meselson and Stahl experiment and outline its significance.arrow_forward
- beadle and tatum proposed the one-gene-one-polypeptide hypothesis. is this true for prokaryotes and eukaryotes? explain your answer in not more than five sentencesarrow_forwardGenome is a word used to refer to??arrow_forwardBeadle and Tatum proposed the one-gene-one-polypeptide hypothesis. Is this true for prokaryotes and eukaryotes? Explain your answer completely.arrow_forward
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