Month: September 2022

TERMINAL DIFFERENTIATION HYPOTHESIS. "Presently, the only alternative explanation of the limited proliferative capacity of normal cells that competes with the notion that it represents aging at the cellular level is the conjecture that it might represent terminal differentiation." http://protein.bio.msu.ru/biokhimiya/contents/v62/full/62111380.html View in LinkedIn

NAIL IN COFFIN TO HYPOTHESIS. "Cells aging in vitro do, indeed, acquire hundreds of incremental and decremental physiological changes as the approach the end of their in vitro lifespan. Yet, none of these changes raise the cell to a higher level of differentiation or specialization. To call the Phase III Phenomenon differentiation seems entirely inappropriate." http://protein.bio.msu.ru/biokhimiya/contents/v62/full/62111380.html View in LinkedIn

FRAGMENT FROM NATURE deals with the quirky orchid family. Few plant families are as diverse as orchids, and with diversity comes a dazzling array of strategies for getting ahead. They illustrate how one plant family can be so creative in employing different complicated structures and behaviors especially in reproduction. Enjoy this glorious group. View in LinkedIn

ENGROSSED. "I was never more interested in any subject in my life than this of orchids." (Charles Darwin). https://lnkd.in/dQ3aG5K View in LinkedIn

"CHARLES DARWIN was the first to recognize that orchids offer superb cases for illuminating evolutionary processes, devoting an entire volume to the Various Contrivances by Which Orchids Are Fertilized by Insects." (1877). https://lnkd.in/dt8CgYk View in LinkedIn

INSECT POLLINATORS. "I was led to attend to the cross-fertilisation of flowers by the aid of insects, from having come to the conclusion in my speculations on the origin of species, that crossing played an important part in keeping specific forms constant." (Charles Darwin, 1862). https://lnkd.in/dSQjj95 View in LinkedIn

PHENOMENAL FAMILY. "Orchids are the most diverse family of angiosperms, with over 25 000 species, more than mammals, birds and reptiles combined. Orchids form the largest family of flowering plants...they comprise roughly 8% of all vascular plant species and grow in a wide range of habitats worldwide.” https://lnkd.in/d2u86tE View in LinkedIn

KISSING COUSINS. "The Orchidaceae (are) the largest family in species number. The ease of hybridisation means more than 100,000 hybrids have been created, more than any other floricultural crop.” https://lnkd.in/dyinqbV View in LinkedIn

MOST DIVERSIFIED. "The highest rate of net species diversification within the orchids (0.382 sp sp−1 My−1) is 6.8 times that at the Asparagales crown." http://rspb.royalsocietypublishing.org/content/282/1814/20151553 View in LinkedIn

SUPERLATIVE ON MANY FRONTS. "Orchids display extraordinary floral diversity, with striking adaptations to different pollinators among close relatives, partitioning of individual pollinators by precise placement of pollen packets (pollinia) on different parts of their bodies, and extreme convergence and divergence among crossable taxa." http://rspb.royalsocietypublishing.org/content/282/1814/20151553 View in LinkedIn