Related Experiment Video
Updated: Feb 2, 2026

High-throughput Physical Mapping of Chromosomes using Automated in situ Hybridization
Published on: June 28, 2012
Physical Genome Mapping Using Fluorescence In Situ Hybridization with Mosquito Chromosomes
Maria V Sharakhova1, Gleb N Artemov2, Vladimir A Timoshevskiy2
1Department of Entomology and Fralin Life Science Institute, Virginia Tech, Blacksburg, VA, USA. msharakh@vt.edu.
Abstract:
The development of genomic resources and tools is an important step in designing novel approaches to genetic control of mosquitoes. Physical genome maps enhance the quality of the genome assemblies, improve gene annotation, and provide a better framework for comparative and population genomics studies in mosquitoes. In this chapter, we describe protocols for an important procedure in physical genome mapping-fluorescence in situ hybridization (FISH). We provide details on (1) dissection of salivary glands, ovaries, and imaginal discs for obtaining high-quality polytene or mitotic chromosome preparations; (2) DNA-labeling procedures and extraction of repetitive DNA fractions; and (3) approaches to FISH on polytene and mitotic chromosomes.
Related Concept Videos
FISH - Fluorescent In-situ Hybridization
Chromosome Replication
In-situ Hybridization
Types of probes and labels
A probe is a complementary strand of DNA or RNA that binds to corresponding nucleotide sequences in a cell. Many...
Chromosomal Theory of Inheritance
Chromosome Structure
The centromere is a DNA sequence that links sister chromatids. This is also where kinetochores, protein complexes to which spindle microtubules attach, are constructed after the chromosome is replicated. The kinetochores allow the spindle microtubules to move the chromosomes within the cell during cell division.
Telomeres consist of non-coding repetitive nucleotide...
Polytene Chromosomes

