Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 12.4, Problem 1EQ
Summary Introduction
To explain: The mechanism by which triplet mimics the role of an mRNA molecule.
Introduction: The two scientists, Nirenberg and Leder discovered the concept of triplets in the mRNA molecules. The triplet is the RNA molecules containing the set of three nucleotides. The triplets have the special characteristics of causing the tRNA molecule to bind to a ribosome.
Summary Introduction
To explain: The usefulness of recognition of triplets in the study of Nirenberg and Leder.
Introduction: The two scientists, Nirenberg and Leder discovered the concept of triplets in the mRNA molecules. The triplet is the RNA molecules containing the set of three nucleotides. The triplets have the special characteristics of causing the tRNA molecule to bind to a ribosome.
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Refer to the DNA sequence provided:3’ -TACTGAAGCGGCAGCCCCGCATGAGTAGACCTTACT-5’a. What is the mRNA transcript of the anticoding strand of the DNA model?
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Chapter 12 Solutions
Biology
Ch. 12.1 - What disease would result if a person inherited...Ch. 12.1 - Prob. 2CCCh. 12.1 - What is the direction of flow of genetic...Ch. 12.2 - Core Skill: Connections Look back at the role of...Ch. 12.3 - Prob. 1CCCh. 12.4 - Prob. 1CCCh. 12.4 - Prob. 1EQCh. 12.4 - Prob. 2EQCh. 12.4 - Prob. 3EQCh. 12.5 - Core Skill: Connections Look back at Figure 6.3,...
Ch. 12.5 - Prob. 2CSCh. 12.6 - Prob. 1CCCh. 12 - Which of the following best represents the central...Ch. 12 - A mutation prevents a gene from being transcribed...Ch. 12 - Prob. 3TYCh. 12 - Prob. 4TYCh. 12 - If a eukaryotic mRNA failed to have a cap attached...Ch. 12 - Prob. 6TYCh. 12 - Prob. 7TYCh. 12 - During the initiation of translation, the first...Ch. 12 - Prob. 9TYCh. 12 - Prob. 10TYCh. 12 - Prob. 1CQCh. 12 - Prob. 2CQCh. 12 - Prob. 3CQCh. 12 - Prob. 1COQCh. 12 - Prob. 2COQ
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- Give examples of the different classes of mutations that affect the base sequence of DNA in protein encoding genes and explain the effects that each has on the polypeptide produced.arrow_forwardIf 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_forwardWhat is the 5′ cap? How is the 5′ cap added to eukaryotic pre-mRNA? What is the function of the 5′ cap?arrow_forward
- Here is a eukaryotic gene. The numbers given are base pairs of exon and intron. How long in bases will the pre mRNA transcript be? Explain briefly. What is the maximum number of amino acids that could make up the protein product from the final mRNA? Explain briefly.arrow_forwardExplain what is meant by stating that the genetic code is triplet and nonoverlapping? What did the finding that DNA base composition varied greatly among different organisms suggest about the genetic code? How was the identity of the UUU codon established?arrow_forwardRefer to the DNA sequence provided: 3’ -TACTGAAGCGGCAGCCCCGCATGAGTAGACCTTACT-5’ a. What is the mRNA transcript of the anticoding strand of the DNA model? b. What is the amino acid sequence of the polypeptide chain that will be translated from the mRNA in (a)?arrow_forward
- What is the name given to study of biochemical nature of genes and how genes express their encoded informationarrow_forwardAssuming alternative splicing can generate all permutations and combinations. How many proteins could a gene with three exons and two introns generate?arrow_forwardConsider a single base insertion mutation between the 3rd and 4th codons in a natural gene that encodes a protein 100 amino acids long. Is it more likely that the protein produced by this mutant allele will be shorter or longer than 100 amino acids long?arrow_forward
- Refer to the DNA sequence provided:3’ -TACTGAAGCGGCAGCCCCGCATGAGTAGACCTTACT-5’ b. What is the amino acid sequence of the polypeptide chain that will be translated from the mRNAin (a)? (The question for A is this: What is the mRNA transcript of the anticoding strand of the DNA model?)arrow_forwardThe coding sequences of Gene F and Gene G are shown by the double-stranded DNA below. What is the messenger RNA sequence when Gene F is transcribed?arrow_forwardWhat are the functions of transcriptional activator proteins and repressor proteins? Explain how they work at the molecular level.arrow_forward
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