The SARS-Cov2 coronavirus's genome was released, and is now available on Genbank.  Looking at it...

>         1 attaaaggtt tataccttcc caggtaacaa accaaccaac tttcgatctc ttgtagatct
       61 gttctctaaa cgaactttaa aatctgtgtg gctgtcactc ggctgcatgc ttagtgcact
      121 cacgcagtat aattaataac taattactgt cgttgacagg acacgagtaa ctcgtctatc
      ...
    29761 acagtgaaca atgctaggga gagctgccta tatggaagag ccctaatgtg taaaattaat
    29821 tttagtagtg ctatccccat gtgattttaa tagcttctta ggagaatgac aaaaaaaaaa
    29881 aaaaaaaaaa aaaaaaaaaa aaa
> <sub>[Wuhan seafood market pneumonia virus isolate Wuhan-Hu-1, complete genome][1], Genbank</sub>

Geeze, that's a lot of [a][2] nucleotides---I don't think that's just random.  I would guess that it's either an artifact of the sequencing process, or there is some underlying biological reason.

**Question**: Why does the SARS-Cov2 coronavirus genome end in 33 a's?


  [1]: https://www.ncbi.nlm.nih.gov/nuccore/MN908947
  [2]: https://en.wikipedia.org/wiki/Adenine