I've used this tactic many times and gained 2 or 3 points on most of my opponents since they had engaged in a bidding war over more desirable genes. Once everyone has acquired their new gene, the turn ends and the entire process is repeated until the meteor smashes into the earth. When this occurs, the player with the most mutation points is victorious. Well, sort of. After all, he's dead, too.
Additional spice is added to the game by the inclusion of event cards.
Each player initially possesses three such cards, and new ones can be acquired by winning a bid for a 'card' gene. These cards have a wide variety of effects, including altering the climate, giving birth away from an adjacent dinosaur, killing an opponent's dinosaur, etc. They can have a significant impact on the game and some of the genes appear a bit too powerful and unbalancing. Only further experience will reveal which, if any, genes are truly unbalancing and should be modified. Evo is quite fun to play and lasts just about the right length of time without overstaying its welcome.