I've played this game for about an hour yesterday and I think you already did a good job! This is not a game where you need to be 100% concentrated all the time, which is good because I can watch a video besides playing this game.
Everything I'd need to "critizise" has already been mentioned, so I'm just gonna summarize:
There is still a lot of potential in this game, meaning you can include way more mechanics like variations of sheep, more upgrades, ways to move/zoom around the map, better collecting of dna and more variations of the maps.
I also like the sound design and little texts above the mutating people, the animations and little texts our "boss" tells us. You really put some effort in there and I can feel that!
Nice game, I'd love to see more from you in the future!