But a human and chimp's have over 3 billion nucleotides in our genome. SARS2 only has 30 thousand, so the genetic distance between the two are at most decades,

But a human and chimp's have over 3 billion nucleotides in our genome. SARS2 only has 30 thousand, so the genetic distance between the two are at most decades, but with recombinants the timeline is much shorter