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Exercise

Exploring the Zika virus sequence

It's your turn to explore the Zika virus genome, which has been loaded in your workspace as zikaVirus. The genome was downloaded from NCBI and you can apply Biostrings functions to learn more about it.

Start by checking the alphabet of the sequence.

alphabet() # Shows the letters included in the sequence
alphabetFrequency() # Shows the counts per letter

Remember from the video that each alphabet corresponds to a specific biostring container, and each alphabet usually has extra code letters and symbols.

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  • Use alphabet() to find out which letters are included in the zikaVirus.
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