Is there a geneticist in the house?

[deborah_c]

From yesterday's Hansard, courtesy of a particularly loopy (and I say this without prejudice, or at least any need for it, against his party) MP:

Any suggestion that people's genes are fixed in one particular way from the moment of conception is wrong. The expression ''bisexual''—I am never quite sure what it means—is now a commonplace in the language. It suggests that people can change their sexual proclivities at different stages of their life. That is a fact of life.

*boggle*

I think I'd support his "[not] sure what it means" wholeheartedly. As for the rest...