Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 10, Problem 20QP
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How many amino acid are in each of the two polypeptides produced? And how many nucleotides long would the final processed mRNA made from the gene be?
A gene contains 141 codons. How many nucleotides are present in the gene’s coding sequence? How many amino acids are expected to be present in the polypeptide encoded by this gene?
What is the resulting polypeptide: _______________________________________________________?
What effect does this mutation have on the polypeptide? Make sure to compare to the original polypeptide.
Would this mutation allow the protein for perform the intended function? Why or why not?
Chapter 10 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 10.4 - Prob. 1GRCh. 10.4 - Prob. 2GRCh. 10.7 - Prob. 1EGCh. 10.7 - Prob. 2EGCh. 10 - A couple was referred for genetic counseling...Ch. 10 - A couple was referred for genetic counseling...Ch. 10 - A couple was referred for genetic counseling...Ch. 10 - Many individuals with metabolic diseases are...Ch. 10 - Prob. 2QPCh. 10 - Enzymes have all the following characteristics...
Ch. 10 - Questions 4 through 6 refer to the following...Ch. 10 - Questions 4 through 6 refer to the following...Ch. 10 - Prob. 6QPCh. 10 - Prob. 7QPCh. 10 - Prob. 8QPCh. 10 - a. Compounds A, B, C, and D are known to be...Ch. 10 - b. Compounds A, B, C, and D are known to be...Ch. 10 - a. If an individual who is homozygous for the...Ch. 10 - Prob. 12QPCh. 10 - Suppose that in the formation of phenylalanine...Ch. 10 - If phenylalanine was not an essential amino acid,...Ch. 10 - Phenylketonuria and alkaptonuria are both...Ch. 10 - The normal enzyme required for converting sugars...Ch. 10 - Knowing that individuals who are homozygous for...Ch. 10 - Prob. 18QPCh. 10 - A person was found to have very low levels of...Ch. 10 - If an extra nucleotide is inserted in the first...Ch. 10 - Transcriptional regulators are proteins that bind...Ch. 10 - Prob. 22QPCh. 10 - Prob. 23QP
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- If the coding region of a gene (the exons) contains 2,100 base pairs of DNA, would a missense mutation cause a protein to be shorter, longer, or the same length as the normal 700 amino acid proteins? What would be the effect of a nonsense mutation? A sense mutation?arrow_forwardSuppose the codon sequence AUGACCCGGCUACUG has a single base pair mutation to AUGACCCGGUUACUG. If the old protein sequence was Met-Thr-Arg-Leu-Leu, what will be the new sequence encoded by the mutant gene?arrow_forwardA normal hemoglobin protein has a glutamic acid at position 6; in sickle-cell hemoglobin, this glutamic acid has been replaced by a valine. List all the possible mRNA codons that could be present for each type of hemoglobin. Can a single base change result in a change from Glu to Val in hemoglobin?arrow_forward
- How many amino acids will the mRNA sequence "AUG GAC CUG UCG UGA" produce?arrow_forwardIf the mRNA transcribed for this gene will be translated into a functional protein, how many amino acids will be used to build the polypeptide chain? what is the amino acid coded by the 25th codon? what is the amino acid coded by the last codon?arrow_forwardHow is each tRNA charged with the correct amino acid? What are the consequences of a tRNA carrying an incorrect amino acid?arrow_forward
- if mRNA has a codon sequence of 5'-UAG-3', it will encode: Ieucine, no amino acide, methionine, a mutation, or an anticodon?arrow_forwardThe amino acid sequence for a short peptide is Tyr-Leu-Thr-Ala. What are the possible base sequences of the mRNA and the transcribed DNA strand that code for it? What are the anticodons?arrow_forward______ mutations in the coding sequences of a gene maymodify the amino acid sequence of the polypeptideproduct.?arrow_forward
- If a single strand of a gene contains 678 bases, how many amino acids result in the polypeptide prepared from it, assuming every base of the gene is transcribed and then translated?arrow_forwardIf a tRNA has an anticodon sequence 5'-CAU-3', What would be an amino acid carried by that tRNA? Phe, Val, His, or Met?arrow_forwardWhy is the pKa of the arginine side chain greater than the pKa of the lysine side chain?arrow_forward
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