What are the characteristics of heuristics?

Heuristics are "rules of thumb". A heuristic is an attempt at guessing an answer to a problem, which could be correct, but does not guarantee it to be correct (or even suitable).A common method of...

physical characteristics of a human is your phenotype

something that describes someone

Well, a typical "he" will be male. In human, this means that "he" will produce hormone testosterone and not estrogen which is what "she" will produce. Also, "he" will not have a mammary glands...

Circular reasoning much? This looks like a question taken from a larger document. I'm not entirely sanguine about doing your homework for you, and in this particular case I couldn't even if I wanted...