Alternation of Generations
Alternation of generations (AoG) refers to alternate asexual and sexual reproductive modes during a multicellular organism’s life cycle. For algae, plants, fungi, and slime molds, AoG also involves different genetic forms at different stages of life: alternately haploid (1 set of chromosomes) and diploid (2 sets of chromosomes).
One generation is predominant during life. The other form is typically part of early development.