Do killer whale have a nucleus?

Answer 1

I am not quite sure which definition of nucleus you are trying to ask about, but every cell in living animals has a nucleus. If you are talking about nuclear family units, orca/killer whales, like most whales, live in family groups called pods, which can contain mates and offspring of several generations. Whales do not generally separate from their pods if they do not have to, so many view this tendencey as being similar to the nuclear family of most mammalian species. I hope this answers your question somewhat.