Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 10, Problem 1TY
Which of the following best represents the central dogma of gene expression?
- During transcription, DNA codes for polypeptides.
- During transcription, DNA codes for mRNA, which codes for polypeptides during translation.
- During translation, DNA codes for mRNA, which codes for polypeptides during transcription.
- None of the above are correct.
Expert Solution & Answer
Summary Introduction
Introduction:
The central dogma is a theory of molecular biology. It describes the process of gene expression in the living organism, which suggests that gene expression takes place in two steps, transcription and translation.
Answer to Problem 1TY
Option (b).
Explanation of Solution
Explanation for correct answer:
Option (b) During transcription, the DNA codes for mRNA and the mRNA codes for polypeptide in translation. According to the central dogma of molecular biology, the flow of genetic information is from DNA(RNA(Polypeptide. The DNA codes for the formation of mRNA in the process called transcription. The mRNA codes for polypeptide in the process is known as translation.
Explanation for the incorrect answer:
Option (a) During translation, DNA codes for the polypeptide. The translation is a process, in which mRNA codes for the polypeptide. Hence, it is an incorrect answer.
Option (c) During translation, DNA codes for mRNA and the mRNA codes for polypeptide during translation. According to central dogma, transcription is the process, in which DNA codes mRNA and translation is the process, in which mRNA codes for the polypeptide. Hence, it is not the correct answer.
Option (d) none of the above are correct. The correct answer is option (b), hence, it is an incorrect option.
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Students have asked these similar questions
Which of the following is true only for eukaryotic gene expression?
mRNA is synthesized in the 3' ---> 5' direction.
Translation of mRNA routinely begins before transcription is complete.
The mRNA transcript is the exact complement of the gene from which it was copied.
After transcription, a 3' poly-A tail and a 5' cap are added to mRNA.
RNA polymerase binds to the promoter region to begin transcription.
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?
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 c
Unlike in prokaryotic cells, transcription and translation in eukaryotic cells...
Group of answer choices
are separated: transcription occurs in the cytoplasm, and translation occurs in the nucleus.
occur together in the cytosol.
occur together in the nucleus.
are separated, except for proteins that bind to the DNA and ribosomes, which are translated in the nucleus.
are separated: transcription occurs in the nucleus, and translation occurs in the cytoplasm.
Chapter 10 Solutions
Principles of Biology
Ch. 10.1 - What is the direction of flow of genetic...Ch. 10.1 - Prob. 1TYKCh. 10.1 - Prob. 2TYKCh. 10.1 - Prob. 3TYKCh. 10.2 - How would removing a terminator from a gene affect...Ch. 10.2 - Prob. 1BCCh. 10.2 - Prob. 1TYKCh. 10.2 - Prob. 2TYKCh. 10.3 - Do the ends of protein-encoding genes have a poly...Ch. 10.3 - The splicing of pre-mRNA in eukaryotes involves...
Ch. 10.3 - Prob. 2TYKCh. 10.4 - Prob. 1CCCh. 10.4 - Prob. 2CCCh. 10.4 - Prob. 1TYKCh. 10.4 - Prob. 2TYKCh. 10.5 - Prob. 1CCCh. 10.5 - Prob. 1BCCh. 10.5 - Based on the gene sequences shown here, pick two...Ch. 10.5 - Prob. 1TYKCh. 10.5 - Prob. 2TYKCh. 10.5 - Prob. 3TYKCh. 10.6 - Prob. 1CCCh. 10.6 - Prob. 1TYKCh. 10.6 - Prob. 2TYKCh. 10 - Which of the following best represents the central...Ch. 10 - Prob. 2TYCh. 10 - Prob. 3TYCh. 10 - Prob. 4TYCh. 10 - Prob. 5TYCh. 10 - Prob. 6TYCh. 10 - The legion of a tRNA that is complementary to a...Ch. 10 - Prob. 8TYCh. 10 - Prob. 9TYCh. 10 - Prob. 10TYCh. 10 - Lets suppose a gene mutation changed the sixth...Ch. 10 - What is the function of an aminoacyl-tRNA...Ch. 10 - A principle of biology is that the genetic...Ch. 10 - Prob. 1CBQCh. 10 - Prob. 2CBQ
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