Any alien lifeforms you breed at this
base gain a +1 lifecycle bonus
If this facility came up later in the tech tree than it does, it would be easy
to miss, and that would be a shame. For the extremely modest price, the +2 to Labs makes this facility an excellent value. Make this one of your core facilities - one of the first half dozen you build in any new base - and the net result will be noticeable upward swing in your technological output. The bonus to native life forms is a plus, of course, but what really makes the Biology Lab worth having is the research bonus.
*Not having the Biology Lab makes your bases susceptible to the "Planet Blight"
special event, while having a Biology Lab qualifies you for a bonus nutrient special
event. See Random Events