Traversing genome annotations

Having a genome sequence is interesting, but we will want to extract features from it, such as genes, exons, and coding sequences. This type of annotation information is made available in Generic Feature Format (GFF) and General Transfer Format (GTF) files. In this recipe, we will look at how to parse and analyze GFF files, using the annotation of the Anopheles gambiae genome as an example.

Getting ready

Use the Chapter03/Annotations.ipynb Notebook file, which is provided in the code bundle of this book.

How to do it...

Let...