Campbell Biology Custom Stony Brook 10 Th Edition
10th Edition
ISBN: 9781269870818
Author: Reece Urry Cain Wasserman Minorsky Jackson
Publisher: PEARSON
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Chapter 21.4, Problem 3CC
Contrast the organizations of the rRNA gene family and the globin gene families. For each, explain how the existence of a family of genes benefits the organism.
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a molecular geneticist hopes to find a gene in human liver cells that codes for an important blood-clotting protein. he knows that the nucleotide sequence of a small part of the gene is gtggactgaca. briefly explain how to obtain the desired gene answer
In Eukaryotes the following are areas of the gene that contain amino acid sequences information
A) Exon’s
B) Introns
C) Activators
D) Promoters
Beadle 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.
Chapter 21 Solutions
Campbell Biology Custom Stony Brook 10 Th Edition
Ch. 21.1 - Describe the whole-genome shotgun approach.Ch. 21.2 - Prob. 1CCCh. 21.2 - Explain the advantage of the systems biology...Ch. 21.2 - MAKE CONNECTIONS The ENCODE pilot project found...Ch. 21.2 - MAKE CONNECTIONS In Concept 20.2, you learned...Ch. 21.3 - The best estimate is that the human genome...Ch. 21.3 - Prob. 2CCCh. 21.3 - WHAT IF? What evolutionary processes might...Ch. 21.4 - Discuss the characteristics of mammalian genomes...Ch. 21.4 - VISUAL SKILLS Which of the three mechanisms...
Ch. 21.4 - Contrast the organizations of the rRNA gene family...Ch. 21.4 - MAKE CONNECTIONS Assign each DNA segment at the...Ch. 21.5 - Describe three examples of errors in cellular...Ch. 21.5 - Explain how multiple exons might have arisen in...Ch. 21.5 - What are three ways that transposable elements are...Ch. 21.5 - WHAT IF? In 2005, Icelandic scientists reported...Ch. 21.6 - Prob. 1CCCh. 21.6 - Prob. 2CCCh. 21.6 - Prob. 3CCCh. 21 - How did the Human Genome Project result in more...Ch. 21 - What has been the most significant finding of the...Ch. 21 - Compare genome size, gene number, and gene density...Ch. 21 - Explain how the function of transposable elements...Ch. 21 - How could chromosomal rearrangements lead to the...Ch. 21 - What type of Information can be obtained by...Ch. 21 - Bioinformatics intludes all of the following...Ch. 21 - Homeotic genes (A) encode transcription factors...Ch. 21 - Prob. 3TYUCh. 21 - DRAW IT Below are the amino acid sequences(using...Ch. 21 - EVOLUTION CONNECTION Genes important in the...Ch. 21 - scientific inquiry The scientists mapping the SNPs...Ch. 21 - Prob. 7TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE Insects have three...
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- A molecular geneticist hopes to find a gene in human liver cells that codes for an important blood-clotting. He knows that the nucleotide sequence of a small part of the gene is GTGGACTGACA. Briefly explain how to obtain the desired gene.arrow_forwardDiscuss the following statement: “from the nucleotide sequence of a cDNA clone, the complete amino acid sequence of a protein can be deduced by applying the genetic code. thus, protein biochemistry has become superfluous because there is nothing more that can be learned by studying the protein.”arrow_forwardA gene contains the sequence CGCATACGGTAC that results in the amino acid sequence arg-ile-arg- tyr. A mutation in this gene has a G inserted after the second C in the strand. How will this mutation affect the phenotype? A:This will affect the phenotype because although most of the protein will be identical, the first amino acid will be different. B:This will not affect the phenotype because only the second amino acid is different from the original protein. C:This will not affect the phenotype because the protein will be identical to the original protein. D:This will affect the phenotvpe because all of the amino acids after the first one will be different from he original protein.arrow_forward
- Suppose that a gene has a mutation that changes one nucleotide. Compared to the protein produced from the non-mutated gene, the protein produced from this mutated gene has one different amino acid. This newly altered protein provides enhanced resistance to tetracycline (an antibiotic). This type of mutation would be classified as aarrow_forwardA molecular geneticist hopes to find a gene gene in human liver cells that codes for an important blood clotting protein. He knows that the nucleotides sequence of a small part of the gene is GTGGACTGACA. briefly explain how to obtain the desired genearrow_forwardIf an extra nucleotide is inserted in the first exon of the beta globin gene, what effect will it have on the amino acid sequence of the globin polypeptides? Will the globin most likely be fully functional, partly functional, or nonfunctional? Why?arrow_forward
- An example sequence corresponds to human sickle cell beta-globin mRNA and that this disease results from a point mutation in the β globin gene. In the following section, you will compare sickle cell and normal β globin sequences to reveal the nature of the sickle cell mutation at the protein level. To do this you need to find at least one sequence representing the normal beta globin gene. Open a new window and visit the NCBI home page(http://www.ncbi.nlm.nih.gov) and select “Nucleotide” from the drop menu associated with the top search box. Then enter the search term: HBB . Note that lots of irrelevant results are returned so let's apply some “Filters” (available by clicking in the left-hand sidebar) to focus on RefSeq entries for Homo sapiens. Remember that we are after mRNA so we can compare to the mRNA sequence from part 1 above. QUESTION #1: What is the ACCESSION number of the “Homo sapiens hemoglobin, beta (HBB), mRNA” entry? NOTE: Boolean operators (NOT, AND, OR) as…arrow_forwardasap please A partially filled diagram of eukaryotic gene structure is shown below. Label the following additional elements in the empty boxes. One label must be used twice: a) 3'UTR, b) 5'UTR, c) exon, d) intron, e) promoterarrow_forwardWhat is a gene? Provide at least two different definitions and explain.arrow_forward
- Explain how the ability of a large, multisubunitprotein molecule to bind a specific DNA sequence can be alteredwhen it binds with a small molecule no larger than a single aminoacid.arrow_forwardThe figure below shows the introns and exons found in gene X. The size of each exon and intron is shown as well. A study on this organism found that two mature mRNA molecules are produced for this gene. One is 867 nucleotides in length, and the other is 685 nucleotides in length. Name the process responsible for producing this variation. Also explain how these 867 and 685 nucleotide fragments were produced by referring to the information provided. Hint: This organism produces a poly-A tail of 150 nucleotides.arrow_forwardCreate a Venn diagram to compare and contrast the process of gene expression in Bacteria versus eukaryotes. Remember that “gene expression” can include any part of transcription or translation. Try to be as thorough as you can about what aspects of this process are similar between the two taxa, and what characteristics are distinct to only Bacteria or eukaryotes. Plase include a minimum of 15 items in the Venn diagram.arrow_forward
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