29761 acagtgaaca atgctaggga gagctgccta tatggaagag ccctaatgtg taaaattaat
29821 tttagtagtg ctatccccat gtgattttaa tagcttctta ggagaatgac aaaaaaaaaa
29881 aaaaaaaaaa aaaaaaaaaa aaa
Geeze, that's a lot of a 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?
https://bioinformatics.stackexchange.com/questions/11227/why-does-the-sars-cov2-coronavirus-genome-end-in-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
https://www.ncbi.nlm.nih.gov/nuccore/NC_045512