How to make a Drosophila chromosome map

The sequencing of genomes — human genomes as well as those of model organisms, like the fruit fly Drosophila melanogaster — has given us deep insight into the structure of chromosomes and their nucleotide sequences. But long before DNA sequencing technology existed, researchers were able to use mutant genes to create high-quality chromosome maps for… Continue reading How to make a Drosophila chromosome map