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ABSCISSION. "During the course of development, plants shed entire organ systems through the process referred to as abscission. Abscission provides a mechanism for the removal of senescing or otherwise damaged organs and for the release of fruits as they ripen." https://lnkd.in/dNWP3KD View in LinkedIn

MASTER CONTROL. "Observations are consistent with the existence of master regulatory systems that can determine the timing of the senescence syndrome." https://lnkd.in/dNWP3KD View in LinkedIn

COMPLEXITY AND CONTROL. "The overall process of the senescence syndrome may be very complex, but it is still worth considering whether there are definable regulatory systems that have an overriding influence on the timing of the conversion from photosynthetic to salvage programs." https://lnkd.in/dNWP3KD 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

MASSIVE GENE CHANGES. "Continuing studies are likely to indicate that the conversion of a leaf from a photosynthetic system to a source of stored nutrients involves global changes in gene expression." https://lnkd.in/dNWP3KD 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

GENE DRIVEN. "It is clear that the senescence syndrome is a genetically controlled process that requires continuing gene expression." https://lnkd.in/dNWP3KD View in LinkedIn

COOPERATION AND EVOLUTIONARY THEORY. "A behaviour is cooperative if it provides a benefit to another individual and if it has evolved at least partially because of this benefit. Such behaviours pose a problem to evolutionary theory because — all else being equal — they would reduce the relative fitness of the performer of that behaviour and hence be selected against." http://www.sciencedirect.com/science/article/pii/S0960982207014996 View in LinkedIn

TO THE CONTRARY. "However, cooperation can be found at all levels of biological organisation: genes cooperate in genomes, organelles cooperate to form eukaryotic cells, cells cooperate to make multicellular organisms, bacterial parasites cooperate to overcome host defences, animals breed cooperatively, and humans and insects cooperate to build societies." http://www.sciencedirect.com/science/article/pii/S0960982207014996 View in LinkedIn

NEGATIVE CONSEQUENCES? "Natural selection favours genes that increase an organism's ability to survive and reproduce. This would appear to lead to a world dominated by selfish behaviour." https://lnkd.in/dR7H7Yw View in LinkedIn