ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Chapter 14, Problem 13TYU
SYNTHESIZE YOUR KNOWLEDGE
Some mutations result in proteins that function well at one temperature but are nonfunctional at a different (usually higher) temperature. Siamese cats have such a “temperature-sensitive” mutation in a gene encoding an enzyme that makes dark pigment in the fur. The mutation results in the breed's distinctive point markings and lighter body color (see the photo). Using this information and what you learned in the chapter, explain the pattern of the cat’s fur pigmentation.
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You suspect a protein that is being expressed has been affected by a mutation. When you examine the fully functional protein you find curiously that it still has retained all of its overall function. A friend of yours doing research with you assures you when examining the genetic data a new mutation does in fact exist in this protein. What is the most likely type of mutation that occurred based on this information?
Group of answer choices
frameshift mutation
silent mutation
nonsense mutation
A gene affecting the behavioral outlook of individuals was discovered in several humans who can overcome anxiety caused by life's problems. Part of the gene that į translated into protein has a sequence 3'-GGATCCCGAATGTAATGCGTGCTC AATGGTAGTACGGC-5'.
1. What is the complementary strand of the DNA?
2. What is the sequence of the MRNA product after translation?
3. What is the sequence of the peptide encoded by the portion of the gene? (Use one letter symbol of amino acids)
Transcribe and translate the mutated sequence #1. Determine the consequence, if any, for each mutation. You will need to use your codon charts in your ISN. Practice with both charts.
Chapter 14 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 14.1 - MAKE CONNECTIONS In a research article about...Ch. 14.1 - What polypeptide product would you expect from a...Ch. 14.1 - DRAW IT The template strand of a gene contains the...Ch. 14.2 - What is a promoter? Is it located at the upstream...Ch. 14.2 - What enables RNA polymerase to start transcribing...Ch. 14.2 - WHAT IF? Suppose X-rays caused a sequence change...Ch. 14.3 - Given that there are about 20,000 human genes, how...Ch. 14.3 - How is RNA splicing similar to how you would watch...Ch. 14.3 - WHAT IF? What would be the effect of treating...Ch. 14.4 - What two processes ensure that the correct amino...
Ch. 14.4 - Discuss the ways in which rRNA structure likely...Ch. 14.4 - Describe how a polypeptide to be secreted is...Ch. 14.4 - WHAT IF? DRAW IT Draw a tRNA with the anticodon...Ch. 14.5 - What happens when one nucleotide pair is lost from...Ch. 14.5 - Prob. 2CCCh. 14.5 - WHAT IF? DRAW IT The template strand of a gene...Ch. 14 - In eukaryotic cells, transcription cannot begin...Ch. 14 - Prob. 2TYUCh. 14 - The anticodon of a particular tRNA molecule is A....Ch. 14 - Prob. 4TYUCh. 14 - Which component is not directly involved in...Ch. 14 - Prob. 6TYUCh. 14 - Prob. 7TYUCh. 14 - Prob. 8TYUCh. 14 - Prob. 9TYUCh. 14 - SCIENTIFIC INQUIRY Knowing that the genetic code...Ch. 14 - Prob. 11TYUCh. 14 - FOCUS ON INFORMATION Evolution accounts for the...Ch. 14 - SYNTHESIZE YOUR KNOWLEDGE Some mutations result in...
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