It’s from the animated reconstruction of Power of the Daleks, Patrick Troughton’s debut story. Available for free on Tubi and making its rounds in the Classic Doctor Who live channel on Pluto & Roku
Probably the best story brought back from “lost” status.
You see, when two Kaleds share a seething hatred for all other lifeforms very much, they do a special hug, then their genetic material gets deposited into the incubation tanks…
Do they even need a whole brain? I remember the very chilling speech by the Emperor Dalek about how they rebuilt their army:
We waited here in the dark space, damaged but rebuilding. Centuries passed and we quietly infiltrated the systems of Earth, harvesting the waste of humanity: the prisoners, the refugees, the dispossessed; they all came to us. The bodies were filleted, pulped, sifted. The seed of the human race is perverted. Only one cell in a billion was fit to be nurtured.
I figured they would be mentioned at some point! The meeting below left me wondering why the Daleks need to reproduce at all, based on their claims of efficiency at extermination: