Quick answer
Dr. Ivy’s DNA Lab converts a complete fossil set into an egg. Bring the completed set to Dr. Ivy, then take the egg into the incubation step.
On this page
Before visiting Dr. Ivy
The key prerequisite is a full fossil set. The official description does not give a price, level requirement or exact lab coordinates.
The result you are aiming for
The conversion result is an egg. Warming it in an incubator is a separate step; reaching the lab does not itself complete hatching.
If the hand-in does not proceed
First compare the game’s set requirement with the pieces you have. If it is complete, record the prompt or error shown by Dr. Ivy. Exact rejection messages and extra requirements still need direct evidence.
Your next task
Choose the guide that matches the step you are working on next.