Her lab is currently focused on whether liver tissue and cells can be restored to a younger state to heal the damage from aging, disease, or injury. Payel Sen, Ph.D., a Stadtman investigator with the NIA Intramural Research Program, leads a team using epigenetic techniques to study the repair of aging or damaged cells. Environmental factors such as stress and trauma or even neighborhoods or zip codes may also have an impact.Īs part of NIA’s work to increase health span - the part of a person’s life during which he or she is generally in good health - several NIA-funded researchers are accelerating understanding of these epigenetic markers and mechanisms of aging. Different lifestyle and behavioral factors such as diet, sleep, exercise, smoking, and drinking alcohol can also affect the composition and location of the chemical groups that bind to our DNA. Genes are made of a chemical called DNA.Įpigenetic changes are vital to normal biological functioning and can affect natural cycles of cellular death, renewal, and senescence. This area of research involves the study of how our behaviors and environment can cause changes that affect the way our genes work. Shantungosaurus also had a large Tyrannosaur in its ecosystem so it's probably just because its ancestors became larger over time.The word “epigenetics” is derived from the Greek word “epi”, meaning “over” or “above,” and in this case, over or above the genome. Shantungosaurus only outsizes the late cretaceous NA hadrosaurs by around 1-2 meters, Edmontosaurus and Anatosaurus both got to 12-13 meters, and Maganapaulia got to around 14-15. Seeing that Titanosaurs filled the role of Brachiosaurs after the Jurassic and Rebacchisaurs like Limaysaurus did the same for diplodocoids (save Maraapunisaurus, which may show that Rebacchisaurs started off giant and became smaller) i'd say Titanosaurs were geared more toward a brachiosaur type lifestye. rex was too successful in allowing the NA hadrosaurs to get such a size or something?Īlamosaurus appears to have teeth much more like those of Brachiosaurs then diplodocoids. Why was Shantungosaurus so much larger then the hardosaurs in North America? Was it because of T.
Does the teeth of Alamosaurus show that it could do both equally/roughtly equally, or was it more geared toward one way of eating?Ģ. I remember reading that tianosaurs had the eating habits of their brachiosaur relatives, the sheer bite method and the leaf raking way of the diplodicids.
0 kommentar(er)
