What two tissue types do not divide? What are the differences between cells in each tissue type?

If you understood evolution you would not have posted such a vague question. You do not define what you mean by "missing gaps". As well as not defining your loose terminology there is nothing in your question that asks about the evolution of what lineage.

With all this missing information your question is unanswerable. No one can guess what you were thinking when you wrote it. You know what you mean but it is not clear enough for anybody else to know.

Hopefully, you are not asking the stupid, creationist question, "show me the missing links", by which they mean intermediate forms in the fossil record. They exist. They are part of the public record.

They can be seen in museums. Creations pretend they do not exist.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.