Visualising GC content across chromosomes

GC content is the proportion of DNA bases in a given sqeuence window which are either G or C. GC content varies througout a genome due to selection, mutational bias, and GC-biased gene conversion. I’ve visualised this in the genome of Arabidopsis thaliana, which is a model organism for botanical research across a variety of disciplines.

The dropdowns can be toggled to look at different chromosomes, and to look at one of three variables: GC content, GC skew, and tetranucleotide diversity. The slider changes the bin for the moving average (red line). The smaller graph at the bottom can be used to select a region of the graph and zoom in.