I is for Instability

This is my response to this week's Poetry Potluck, which I discovered thanks to a link over at Porky's Expanse!. The theme for the week is Evolution, Environment, and Survival.

I feel like I am channeling Ogden Nash this week...
*************************************************************************************

The pattern set, the dance arises,
called by DNA surprises;
radiation fiddles, clearly,
often costing dancers dearly;
on the other hand, it rarely
benefits them, Punnett-squarely.

New mutations change the rules,
by broadening or ending pools,
and new conditions reshape life,
like a random pocket knife
that whittles out forms, plain or odd,
mimicking the hand of God.