A group of scientists did ponder.
Whether, without years on end,
They'd check evolutionary trends...
They noticed that an insect species
Lived on different plants, and saw
That their appearance, such as that is,
Was quite different, and so
They transplanted one variation
On the others' plant, for a year,
And then checked, with anticipation,
For mutations to appear.
And to their satisfaction,
As expected, they did find,
That the DNA reaction
Changed like of the other kind.
Thus they provided the solution
For speciation change in DNA, –
They could witness evolution
Work its inexorable way...