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What evidence supports the concept that humans share substantial sequence similarities and gene functional similarities with model organisms?
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Ch. 18 - Genomics, Bioinformatics, and Proteomics
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 18, Problema 1a
How do we know which contigs are part of the same chromosome?
Guida verificata passo dopo passo1
Understand that contigs are continuous sequences of DNA assembled from overlapping reads, but they do not inherently indicate their position on chromosomes.
Use paired-end or mate-pair sequencing data, where pairs of reads are known to be a certain distance apart; if pairs map to different contigs, this suggests those contigs are physically close on the same chromosome.
Apply genetic linkage information or physical mapping techniques such as fluorescence in situ hybridization (FISH) to associate contigs with specific chromosomes.
Utilize long-range sequencing technologies or scaffolding methods that link contigs based on known distances or chromatin conformation capture data (e.g., Hi-C) to group contigs into chromosome-scale assemblies.
Integrate all these data sources to build scaffolds and assign contigs to chromosomes by analyzing consistent linkage, proximity, and mapping evidence.
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Contigs and Genome Assembly
Contigs are continuous sequences of DNA assembled from overlapping short reads during genome sequencing. Understanding how contigs are formed helps in piecing together the genome, but contigs alone do not indicate their chromosomal origin without further analysis.
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Percorso guidato
02:48
Genomics Overview
Physical and Genetic Mapping
Physical mapping uses techniques like fluorescence in situ hybridization (FISH) or optical mapping to locate contigs on chromosomes, while genetic mapping relies on recombination frequencies between markers. Both methods help assign contigs to specific chromosomes by providing positional information.
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03:04Modern Mapping
Paired-End and Mate-Pair Sequencing
Paired-end and mate-pair sequencing generate reads from both ends of DNA fragments of known size, linking contigs that are physically close on the same chromosome. This linkage information is crucial for ordering contigs and determining their chromosomal association.
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08:41Sequencing Difficulties
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