Timeline: Organisms that have had their genomes sequenced
When we say that we&#x27;ve &quot;sequenced a genome&quot; — what does that mean, exactly? Just that we&#x27;ve scanned&#x2F;digitized the DNA sequence of a single member of that species? (Since of course the DNA of all members of a species isn&#x27;t the same, otherwise, we&#x27;d all look alike.) Do we ever sample more than one member of a species? How many members of various species have we sampled? (While I&#x27;d expect them to be similar, of course, I&#x27;d also expect the interesting things to be in the differences.)