My question is whether you like the camera enough to take it to a repair shop and have them try and get rid of these pesky living, growing creatures and their family members residing inside the lens. Repair shops totally disassemble the lens elements and clean them with mildecide solutions including bleech, that kill off the mold. The problem though is mold / mildew or fungus amongus, can etch glass surfaces leaving behind post-cleaning problems which may present a whole new set of issues for your equipment and images.
At that point, the real solution is to give your faithful Minolta a decent burial and regardless of what you replace it with, thereafter promising to practice safe camera/lens storage to prevent the problem from recurring elsewhere. That would include toweling off gear and maybe using a hair dryer on equipment that gets wet or damp, storing equipment in bags/packs or equipment cases using refillable/rechargable dessicant containers, and in a place that has low humidity like in a cabinet or open shelving system in your home that's on an inside wall and has good air circulation around it. Periodic cleaning of lenses is a good idea but never apply lens cleaner directly to the lens itself. Put it on lens tissue and then clean the lens.
While you can't prevent mold spores from attaching to surfaces and growing, (unless you live in a bubble or under a dome or perhaps outer space or some other vaccum ) you can take away elements that they use to thrive like stagnant air of high humidity. And don't store your lenses with filters on them. Use breathable caps, front and back if your lenses are removable, same with bodies. There are a lot of other ways to prevent mold and mildew growth. But generally, as I often say, if you are comfortable in the environment you store your equipment in, chances are your equipment will be good there too.
"Tiny spores have tinier spores that sit on their backs and bite'em. The tinier spores have even tinier ones and ad on infinitim." Anon.
Take it light and kindly wash your hands before returning to your keyboard.