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INCOMPLETE PROCESS. "Whole genome duplication is considered to be a significant contributor to angiosperm speciation due to accumulation of rapid, strong interploid reproductive isolation. However, recent work suggests that interploid reproductive isolation may not be complete, especially among higher order cytotypes." https://lnkd.in/eyABWAW View in LinkedIn

INCOMPLETE PROCESS. "Whole genome duplication is considered to be a significant contributor to angiosperm speciation due to accumulation of rapid, strong interploid reproductive isolation. However, recent work suggests that interploid reproductive isolation may not be complete, especially among higher order cytotypes." https://lnkd.in/eyABWAW View in LinkedIn

ALTERNATION OF GENERATIONS. "Plants have a more complex life cycle than animals, alternating between two heteromorphic generations: the sporophyte and the gametophyte. In the diploid sporophyte, distinct cells undergo meiosis and produce haploid spores. These give rise to multicellular haploid gametophytes, which produce gametes through mitotic divisions." (Useful review) https://lnkd.in/ewV3vWP View in LinkedIn

GENETICS OR DIGITAL FIRST? “A longstanding debate—often dubbed the chicken or the egg problem—is which came first, genetic heredity or metabolism? A conundrum arises because neither can operate without the other in contemporary life, where the duality is manifested via the genome–proteome systems.” https://lnkd.in/ewsT9EQ View in LinkedIn

EVOLUTION OF INFORMATION. “How did information first gain causal purchase over certain complex systems that we now call living organisms?” http://rsif.royalsocietypublishing.org/content/10/79/20120869 View in LinkedIn

TRANSITION OF STATES. “We therefore identify the transition from non-life to life with a fundamental shift in the causal structure of the system, specifically a transition to a state in which algorithmic information gains direct, context-dependent, causal efficacy over matter.” http://rsif.royalsocietypublishing.org/content/10/79/20120869 View in LinkedIn

FRAGMENT FROM NATURE continues from last weekend on the theme of biological information. Most scientists today see this information as key to all life processes. How did biological information evolve? Did the transition from non-life to life come first? These are some of the interesting problems to figure out. View in LinkedIn

EVOLUTIONARY SUBSTRATE. "Heritable genetic variation for unreduced gamete production has been observed, thereby providing an evolutionary substrate. Unreduced gametes are also frequently involved in interspecific hybridisation events as well as being produced by interspecific hybrids, facilitating allopolyploidisation." https://lnkd.in/eSsUn-Y View in LinkedIn

NUMEROUS PATHS. "Unreduced gametes (gametes with the somatic chromosome number) are known to facilitate polyploid formation. Unreduced gametes result from a plethora of different mechanisms across different taxa, suggesting that the ability to produce unreduced gametes has evolutionary utility." https://lnkd.in/eSsUn-Y View in LinkedIn

REMARKABLE TWIST. "We demonstrate that unreduced gametes combining freely among parents of different ploidy are the core driver of such systems and that the survival of individual gametic combinations drives reproductive isolation." https://lnkd.in/eJvn-m7 View in LinkedIn