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Restriction sites are palindromic; that is, they read the same in the 5' to 3' direction on each strand of DNA. What is the advantage of having restriction sites organized this way?
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Ch. 17 - Recombinant DNA Technology
Klug10th EditionEssentials of GeneticsISBN: 9780135588789
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TOC.tableOfContents
- Ch. 1 - Introduction to Genetics16
- Ch. 2 - Mitosis and Meiosis28
- Ch. 3 - Mendelian Genetics37
- Ch. 4 - Modification of Mendelian Ratios53
- Ch. 5 - Sex Determination and Sex Chromosomes32
- Ch. 6 - Chromosome Mutations: Variation in Number and Arrangement37
- Ch. 7 - Linkage and Chromosome Mapping in Eukaryotes36
- Ch. 8 - Genetic Analysis and Mapping in Bacteria and Bacteriophages24
- Ch. 9 - DNA Structure and Analysis38
- Ch. 10 - DNA Replication29
- Ch. 11 - Chromosome Structure and DNA Sequence Organization22
- Ch. 12 - The Genetic Code and Transcription36
- Ch. 13 - Translation and Proteins27
- Ch. 14 - Gene Mutation, DNA Repair, and Transposition34
- Ch. 15 - Regulation of Gene Expression in Bacteria22
- Ch. 16 - Regulation of Gene Expression in Eukaryotes37
- Ch. 17 - Recombinant DNA Technology27
- Ch. 18 - Genomics, Bioinformatics, and Proteomics30
- Ch. 19 - The Genetics of Cancer21
- Ch. 20 - Quantitative Genetics and Multifactorial Traits37
- Ch. 21 - Population and Evolutionary Genetics45
Klug10th EditionEssentials of GeneticsISBN: 9780135588789Non è quello che usi tu?Cambia libro di testo
Capitolo 17, Problema 9
What are the advantages of using a restriction enzyme whose recognition site is relatively rare? When would you use such enzymes?
Guida verificata passo dopo passo1
Understand that restriction enzymes cut DNA at specific recognition sites, which are short sequences of nucleotides. The frequency of these sites in a DNA molecule depends on the length and specificity of the recognition sequence.
Recognize that a restriction enzyme with a rare recognition site cuts DNA less frequently, resulting in fewer and larger DNA fragments compared to enzymes with common recognition sites.
Consider the advantage of using such enzymes: they produce larger fragments that can be useful for cloning large DNA segments, mapping genomes, or analyzing large structural features of DNA.
Identify scenarios where rare-cutting enzymes are preferred, such as when you want to isolate or study large genes, genomic regions, or when performing techniques like pulsed-field gel electrophoresis that separate large DNA fragments.
Summarize that rare-cutting restriction enzymes are valuable tools when the goal is to minimize the number of cuts and maintain larger DNA fragments for detailed genetic analysis or manipulation.
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Restriction Enzymes and Recognition Sites
Restriction enzymes are proteins that cut DNA at specific sequences called recognition sites. These sites are usually short, palindromic sequences. The frequency of these sites in a genome depends on their length and sequence specificity, influencing how often the enzyme cuts the DNA.
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Percorso guidato
07:11
Mapping with Markers
Advantages of Rare Recognition Sites
Enzymes with rare recognition sites cut DNA less frequently, producing fewer and larger fragments. This is useful for cloning large DNA segments or when fewer cuts are needed to maintain the integrity of the DNA, reducing complexity in downstream analysis.
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Percorso guidato
04:12Sanger Sequencing
Applications of Rare-Cutting Restriction Enzymes
Rare-cutting enzymes are used in applications like constructing genomic libraries, mapping large DNA molecules, or preparing DNA for techniques requiring large intact fragments, such as pulsed-field gel electrophoresis or certain cloning strategies.
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Percorso guidato
07:11Mapping with Markers
Pratica correlata
Domanda del libro di testo
Using DNA sequencing on a cloned DNA segment, you recover the nucleotide sequence shown below. Does this segment contain a palindromic recognition sequence for a restriction enzyme? If so, what is the double-stranded sequence of the palindrome, and what enzyme would cut at this sequence?
CAGTATGGATCCCAT
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List the advantages and disadvantages of using plasmids as cloning vectors. What advantages do BACs and YACs provide over plasmids as cloning vectors?
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In a typical PCR reaction, describe what is happening in stages occurring at temperature ranges
(a) 92-26 °C
(b) 45-65 °C and
(c) 65-75 °C
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Domanda del libro di testo
In the context of recombinant DNA technology, of what use is a probe?
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Domanda del libro di testo
If you performed a PCR experiment starting with only one copy of double-stranded DNA, approximately how many DNA molecules would be present in the reaction tube after 15 cycles of amplification?
742
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