Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 16, Problem 7P
You have sequenced a
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You have sequenced the genome of the bacterium Salmonella typhimurium and find a protein that is 100 percent identical to a protein in the bacterium Escherichia coli. When you compare nucleotide sequences of the S. typhimurium and E. coli genes, you find that their nucleotide sequences are only 87 percent identical. How would you interpret the observations? Please make sure to select ALL correct answer options.
Because genetic code is redundant, changes in the DNA nucleotide sequence can occur without change to its encoded protein.
Due to the flexibility in the third positions of most codons, the DNA sequence can accumulate changes without affecting protein structure.
Natural selection will eliminate many deleterious amino acid changes. This will reduce the rate of change in the amino acid sequence and lead to sequence conservation of the proteins.
Protein sequences are expected to evolve and…
Annotation involves identifying genes and gene-regulatory sequences in a genome. List and describe characteristics of a genome that are hallmarks for identifying genes in an unknown sequence. What characteristics would you look for in a bacterial genome? A eukaryotic genome?
What is the main reason for using a cDNA library rather than a genomic library to isolate a human gene from which you wish to make large quantities of the human protein in bacteria? How will you identify clones of interest?
Chapter 16 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 16 - You have discovered a new species of Archaea from...Ch. 16 - 16.2 Repetitive DNA poses problems for genome...Ch. 16 - 16.3 When the whole-genome shotgun sequence of the...Ch. 16 - How do cDNA sequences facilitate gene annotation?...Ch. 16 - 16.5 How do comparisons between genomes of related...Ch. 16 - 16.6 You are designing algorithms for the...Ch. 16 - 16.7 You have sequenced a region of the Bacillus...Ch. 16 - You have just obtained 100-kb of genomic sequence...Ch. 16 - 16.9 The human genome contains a large number of...Ch. 16 - Based on the tree of life in Figure 16.12, would...
Ch. 16 - 16.11 When comparing genes from two sequenced...Ch. 16 - 16.12 What is a reference genome? How can it be...Ch. 16 - Prob. 13PCh. 16 - Prob. 14PCh. 16 - 16.16 Consider the phylogenetic tree below with...Ch. 16 - You have isolated a gene that is important for the...Ch. 16 - 16.18 When the human genome is examined, the...Ch. 16 - Symbiodinium minutum is a dinoflagellate with a...Ch. 16 - Substantial fractions of the genomes of many...Ch. 16 - 16.21 A modification of the system, called the ...Ch. 16 - 16.22 A substantial fraction of almost every...Ch. 16 - 16.23 In the globin gene family shown in Figure ,...Ch. 16 - You are studying similarities and differences in...Ch. 16 - In conducting the study described in Problem 24,...Ch. 16 - Prob. 26PCh. 16 - Prob. 27PCh. 16 - Prob. 28PCh. 16 - Prob. 29P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A molecular biologist wants to isolate a gene from a scorpion that encodes the deadly toxin found in its stinger, with the ultimate purpose of transferring this gene to bacteria and producing the toxin for use as a commercial pesticide. Isolating the gene requires a DNA library. Should the molecular biologist create a genomic library or a cDNA library? Explain your reasoning.arrow_forwardHow many Illumina clusters would you need to generate 15X coverage of the human genome, assuming your read lenght is 600 bp? (assume a human genome size of 3 billion bp) - 2.5 billion - 75 million - 7 million - 100 millionarrow_forwardSuppose you are a research assistant in a lab studying dna-binding proteins. you have been given the amino acid sequences of all the proteins encoded by the genome of a certain species and have been asked to find candidate proteins that could bind dna. what type of amino acids would you expect to see in the dna-binding regions of such proteins?arrow_forward
- Your advisor, a brilliant bioinformatician, has high regard for your intellect and industry. she suggests that you write a computer program that will identify the exons of protein- coding genes directly from the sequence of the human genome. In preparation for that task, you decide to write down a list of the features that might distinguish protein- coding sequences from intronic DNA and from other sequences in the genome. What features would you list?arrow_forwardYou have isolated a transposable element from the human genome and have determined its DNA sequence.How would you use this sequence to determine thecopy number of the element in the human genome ifyou just had a computer with an Internet connection?arrow_forwardIf the GAATTC palindrome repeats are randomly found along the DNA strand, then what can you say about the sizes of the fragments that will be produced when the DNA is digested with a restriction enzyme that recognizes that sequence? How does the total length of the fragments relate to the size of the original DNA fragment?arrow_forward
- If I take random biological sequences from a data bank, I see even more sequence similarity. Why ?arrow_forwardIf the bandicoot genome is 3.62 x 109 base pairs, and the "highly repetitive DNA" fraction is composed entirely of copies of sequence 5'TGCGTGTGTGC3' and its complement, how many copies of this sequence are present in the bandicoot genome?arrow_forwardIf you were working on the Human Genome project and trying to distinguish genes from transposons, what characteristics would you look for that would indicate the presense of a transposon in a DNA sequencearrow_forward
- Consider a genome whose length is 1000 bp. "Shotgun" sequencing techniques are applied to the genome, resulting in 20 reads, with an average length of 50 bp. A very important point is that, even though 20×50 = 1000, there is no guarantee that ALL 1000 bp of the genome are represented in the fragments. Calculate the coverage. What does this value mean? Why would it be a good idea to have a coverage greater than 1?arrow_forwardThe goal of many computer programs is to identify sequence elementswithin a long segment of DNA. What is a sequence element? Givetwo examples. How is the specific sequence of a sequence elementdetermined? In other words, is it determined by the computer programor by genetic studies? Explain.arrow_forward. While studying the structure of a small gene that was recently sequenced during the Human Genome Project, an investigator notices that one strand of the DNA molecule contains the following: 20 adenine (A) bases 30 cytosine (C) bases25 guanine (G) bases 22 thymine (T) bases How many of each base is found in the complete double-stranded molecule?arrow_forward
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