This card may be a DNA card, a genotype card, a biome, an immigrant, or a catastrophe. The DNA card is auctioned off, with players using gene tokens. DNA have various effects. A player can only hold as many recessed cards as he has genotypes, so card hands are small. American Megafauna has a unique auction system.
Every player begins with five gene tokens.
Whenever a Catastrophe card is drawn, each player receives five extra tokens. Whenever certain Biome cards are drawn, each player receives one extra token. Genotype cards are also auctioned off. It represents a suborder your existing species. Each genotype has a maximum of fourteen counters on the board.