Which of the following statements about probes used in hybridization methods is true? a. The probe could be a gene from another species. b. They are usually radiolabelled or conjugated with a fluorescent tag so they can be visualized. c. They can be synthetic DNA sequences based on known amino acid sequences. d. They can be based on DNA sequence information from a sequence database. e. All of the above are true statements about hybridization probes

Which of the following statements about probes used in hybridization methods is true? a. The probe could be a gene from another species. b. They are usually radiolabelled or conjugated with a fluorescent tag so they can be visualized. c. They can be synthetic DNA sequences based on known amino acid sequences. d. They can be based on DNA sequence information from a sequence database. e. All of the above are true statements about hybridization probes

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter10: Biotechnology

Section: Chapter Questions

Problem 7RQ: What is the most challenging issue facing genome sequencing? a. the inability to develop fast and...

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What is the most challenging issue facing genome sequencing? a. the inability to develop fast and accurate sequencing techniques b. the ethics of using information from genomes at the individual level c. the availability and stability of DNA d. all of the above
Genomics can be used in agriculture to: a. generate new hybrid strains b. improve disease resistance c. improve yield d. all of the above
In next-generation sequencing, which of these advances allows for massively parallel sequencing? a. Pieces of DNA are fixed to a surface, so we can tell which new nucleotides were added to each piece. b. DNA sequences are read in real-time as nucleotides are added to each piece. c. Each segment of the genome can be pieced back together through shotgun alignment d. Single molecules of DNA can be read without the need for amplification.
Which of the following is true? a. In one technique, the DNA sequence can be determined using one strand of DNA as it passes through a nanopore. b. Next generation sequencing is slow but accurate. c. Both of the above are true.
If you knew the sequence of a gene in one organism, how could you determine if another organism had a similar gene? A. insert the known gene into a vector and use the vector to insert the known gene into the other organism B. treat the genomes of both organisms with the same restriction enzyme and compare the patterns of the bands produced with gel electrophoresis C. create a hybrid of the two organisms by breeding them and check for mutations D. create labeled DNA probes from the known gene and use them to search the genome of the other organism
For each of the following experimental goals, is PCR orgene cloning preferable and why?a. Isolate the same gene from 20 individuals.b. Isolate 100 genes from the same individual.c. Isolate a mouse gene when you have a rat genefragment.
Which of the following is an outcome that could be produced by the application of the biotechnology as described? A. using PCR to modify a crop plant for higher yields B. introducing a recombinant DNA plasmid into a cell to trigger RNAi C. identifying SNPs to match birth parents to an adopted child D. using RT-PCR to generate copies of a gene to be expressed for insulin production An SNP is found associated with individuals who have diabetes. Which statement is true? A. All individuals with the SNP will have diabetes. B. The SNP codes for a faulty protein that causes the individual to have diabetes. C. To identify the SNP in more individuals, they will need to have their genome sequenced. D. The SNP may be linked to a gene that contributes to diabetes.
A region of the genome is amplified by PCR to analyze two closely linked SNPs. PCR products from individual A were labelled with a red-fluorescing dye and those from individual B labelled with a green-fluorescing dye. These PCR products were mixed and hybridized to an oligonucleotide microarray as shown in the figure below. What can we conclude about the data shown? Select all true: a. individual A is heterozygous for the M1 and M2 haplotypes, individual B is heterozygous for M4 and M5 b. individual A is heterozygous for the M1 and M2 haplotypes, individual B is heterozygous for M3 and M6 c. Sanger sequencing traces of these PCR products would show the same double peaks at the same positions for these two individuals d. analyzing this PCR amplified region with conventional Sanger sequencing would be more accurate than the microarray analysis e. individuals A and B could be siblings who share a parent that is homozygous for one of the haplotypes {urgent}
Explain why exome sequencing can be almost as valuable as genome sequencing. (Explain in your own words)
What is a BLAST search? a. A mechanism for aligning consensus regions during wholegenome sequencing b. A search for similar gene sequences from other species c. A method of screening a DNA library d. A method for identifying ORFs
With regard to DNA microarrays, answer the followingquestions:A. What is attached to the slide? Be specific about the numberof spots, the lengths of DNA fragments, and the origin ofthe DNA fragments.B. What is hybridized to the microarray?C. How is hybridization detected?
What is the difference between the first steps of DNA sequencing to PCR in terms of the number of primers being used? Explain