Selling Genetics Materials (makes weakener useful)

[MrMagolor]

Or, alternatively, combine both ideas and enable you to sell materials for research budget, and then be able to buy chromosomes with that budget. Or make it possible for you to spend materials to roll a random chromosome (less annoying as having to eject monkey, activate monkey, put filled in console, put monkey in scanner, repeat).

However, this should not exclude the "traditional" method of getting chromosomes, of course.