For DNA (pronounced "dee-en-ay"):
* Perfect rhymes:
* decay
* say
* way
* lay
* stay
* Near rhymes (slight sound differences):
* obey
* survey
* delay
* display
* employ
For PTA (pronounced "pee-tee-ay"):
* Perfect rhymes:
* play
* stay
* way
* hay
* say
* Near rhymes:
* prey
* sway
* spray
* clay
* bray
Let me know if you'd like some more creative or unusual rhymes!