Year: 2022

NEW HISTORY. "(i) Cyanobacteria originated before the GOE, (ii) multicellularity coincides with the beginning of the rise of oxygen, and (iii) three clades representing the majority of extant cyanobacteria evolved shortly after the accumulation of atmospheric oxygen." (GOE = Great Oxygenation Event). http://www.pnas.org/content/110/5/1791.full View in LinkedIn

EIGHT MAJOR TRANSITIONS. "The evolution of multicellular organisms represents one of approximately eight major evolutionary transitions that have occurred on earth. The major challenge raised by this transition is to explain why single cells should join together and become mutually dependent, in a way that leads to a more complex multicellular life form that can only replicate as a whole." https://lnkd.in/df8KJQ4 View in LinkedIn

ABANDONING INDIVIDUAL LIFESTYLES. "In each of these transitions, a group of individuals that could previously replicate independently joins together to form a new, more complex life form that can only replicate as a whole. For example, genes come together to form genomes, cells join together to form multicellular organisms, and multicellular organisms join together to form eusocial societies." http://www.sciencedirect.com/science/article/pii/S0960982213005678 View in LinkedIn

CLONAL TRANSITIONS. "We found that species with clonal group formation were more likely to have undergone the major evolutionary transition to obligate multicellularity and had more cell types, a higher likelihood of sterile cells, and a trend toward higher numbers of cells in a group." http://www.sciencedirect.com/science/article/pii/S0960982213005678 View in LinkedIn

UNIFYING HYPOTHESIS. "More generally, our results unify the role of group formation and genetic relatedness across multiple evolutionary transitions and provide an unmistakable footprint of how natural selection has shaped the evolution of life." http://www.sciencedirect.com/science/article/pii/S0960982213005678 View in LinkedIn

FACILITATED TRANSITION. "The evolutionary transition from unicellular to multicellular organisms is often referred to as one of the major transitions in evolution, even though many of the requirements for multicellularity probably evolved in unicellular ancestors, thus facilitating the transition." https://lnkd.in/dWyBAjJ View in LinkedIn

UPWARDLY MOBILE. "The evolution of multi-cellularity is characterized by the integration of lower-level units into higher-level entities, and hence is associated with a transition in individuality." http://rspb.royalsocietypublishing.org/content/early/2011/12/05/rspb.2011.1999.short View in LinkedIn

COOPERATION. "Such transitions are thought to be based on cooperation between the lower-level units, and recent models for the evolution of multicellularity are based on the concept of division of labour, typically between soma and germ cells." http://rspb.royalsocietypublishing.org/content/early/2011/12/05/rspb.2011.1999.short View in LinkedIn

MULTITASKING NEED. "Even simple, unicellular organisms need to perform physiological tasks that cannot be efficiently accomplished simultaneously by the same cell." http://rspb.royalsocietypublishing.org/content/early/2011/12/05/rspb.2011.1999.short View in LinkedIn

MULTITASKING EXAMPLES. "Examples include biochemical incompatibility between metabolic processes (such as between oxygenic photosynthesis and oxygen-sensitive nitrogen fixation in cyanobacteria), motility and mitosis (processes that compete for the use of the same cellular machinery, the microtubule-organizing centre), and, in general, reproduction and survival in a challenging environment." http://rspb.royalsocietypublishing.org/content/early/2011/12/05/rspb.2011.1999.short View in LinkedIn