How does multicellularity evolve? Scientists who study a family of green algae that includes unicellular Chlamydomonas and multicellular Volvox are beginning to find answers to this question.
The oldest multicellular algae fossil dates to 1,200 mya. At this time, biological diversity increases greatly, with algae, fungi, animals, and plants diverging from their common eukaryote ancestors.
have discovered a conserved developmental pattern known as the hourglass model in brown algae, providing more evidence that the phenomenon may be a universal feature of complex multicellular ...