The physical trace that is the biological basis of memory is known as a(n)

The notion of incubation has a great deal of intuitive validity – the idea of taking a break aiding in the solution to a problem makes sense. What is the empirical evidence for this phenomenon?

a) Empirical work has failed to find it at all. b) There is some limited evidence for this phenomenon. c) The phenomenon is quite robust, having been obtained in a variety of settings and experimental procedures. d) It's impossible to test in the laboratory, so the notion remains entirely speculative.

Fetuses that are genetically male can nevertheless form female external genitalia if ___

a. they have an XY chromosome pattern b. they have an XX chromosome pattern c. they have complete androgen insensitivity d. they have congenital adrenal hyperplasia