I'm not sure if this is a bug or not; but it's not the typical handling so I thought I'd post about it just in case..
(SPOILERS)
If I talk to Wit Nosek and have 23/28 Bio, I get a [Biology] dialog option.
if I first level up once and put all 40 points into Biology (resulting in Bio 63/79), the [Biology] option disappears.
Typically, the more skill your PC has, the more likely a related dialog option is applicable.
In this case it's the reverse - more Bio results in the dialog not appearing at all.
Not sure that's a bug, but just in case something is reversed where it shouldn't be, I report it..
v1.0.1.4
(ref attached)
[edit to add game version]
