Hoot writes:
Just curious, Dr A, do you know of any evolution going on without the inheriitance of genetic traits.
The evolution of memes.
Some people on this forum have claimed there are "traits" that are not heritable.
Well, some traits are truly not heritable. For example, a trait caused by a specific mutation that renders an individual completely sterile will of course not be heritable.
I have agued that a "trait" must be heritable or it is not a "trait."
According to wikipedia, "A trait may be any single feature or quantifiable measurement of an organism."
But if we want to argue definition here, I guess you can define it whatever you want.
Disclaimer:
Occasionally, owing to the deficiency of the English language, I have used he/him/his meaning he or she/him or her/his or her in order to avoid awkwardness of style.
He, him, and his are not intended as exclusively masculine pronouns. They may refer to either sex or to both sexes!