What are the conditions to get the Gene Seed Purification research option?

[flodjpaca]

Because I have very strong slaves and weak masters I would like to know if this research is likely to occur despite having chosen the Psionic Ascension Path, so that I can recuit gene warriors from my 'strong' slaves rater than psionic warriors from my 'weak' masters

[galadon3]

Needs the first step in the biological ascension path, so nope with the Psi-Path you wont get it.

https://stellaris.paradoxwikis.com/Technology#Research_areas_.26_fields

(clicking the name of one of the fields shows you all the techs in the field and their prerequisits, not 100% sure its totally correct for the actual version but if anything is incorrect its an exception)

[flodjpaca]

So I'm just gonna blast my enemy's planets with the collosus rather than bother invading them. Thanks for the answer!

Originally posted by galadon3:

Needs the first step in the biological ascension path, so nope with the Psi-Path you wont get it.

[galadon3]

Well there are still the Xenomorph armies and if you have robots allowed think you can use robot and android armies.

And if you got a planet that has titanic beasts-modifier recruit the three units of those you are allowed, make sure you put your general on one of those (assign him to the army while only having titanic beast in it, then merge with rest), they are pretty efficient shock troops to break the enemy army.

[flodjpaca]

Maybe it's possible to have more than three armies of titanic beasts if I recuit all at once on two different planets that have the 'titanic beasts-modifier' as you say. I'm gonna try.

Originally posted by galadon3:

Well there are still the Xenomorph armies and if you have robots allowed think you can use robot and android armies.

And if you got a planet that has titanic beasts-modifier recruit the three units of those you are allowed, make sure you put your general on one of those (assign him to the army while only having titanic beast in it, then merge with rest), they are pretty efficient shock troops to break the enemy army.