Phil von Heydebreck
If evolution encourages traits that promote the survival of the species, then why do the natural repair and maintenance capabilities of the body gradually cease to function as individuals age? And why do some animals and plants live so much longer than others? Nature demonstrates immense variability in patterns of aging across different organisms. Understanding how and why aging evolved can shed light on what drives the aging process. Is aging programmed into our genetic blueprint, or is it the result of the accumulation of damage through a lifetime of intraction with the environment? Comparative and evolutionary biology can provide some answers.
What is epigenetics? - Carlos Guerrero-Bosagna
You can call her queen bee: the role of epigenetics in honeybee development
The queen and the workers receive different types and amounts of food (royal jelly only for queenie), as well as more luxuriously large cells to develop in, all of which turns on different developmental pathways. The amount of space that a larva develops in changes levels of DNA methylation. Basically, this is a way switching the DNA “off” or “on” for certain genes, without actually changing the DNA.
Fountains of Youth | Radiolab | WNYC Studios
The Evolution of Aging
Aging, or senescence as it is sometimes called, is an inevitable progressive deterioration of physiological function with increasing age, demographically characterized by an age-dependent increase in mortality and decline of fecundity.
The Evolutionary Theory of Aging and Life History Theory
Why Don't All Blue Whales Have Cancer?
Meet The Tiny, Immortal Hydra, Which Rips Itself Open To Eat - Newsy
Animals That Live a Very Long Time and the Science Behind It
Does This Animal Live Unusually Long? [Slide Show]
Reversing Human Aging | George Church | TEDxBeaconStreetSalon
Aging changes in organs, tissues, and cells: MedlinePlus Medical Encyclopedia
If Humans Were Built To Last
Your learning progress
Aging is the gradual deterioration of an individual over time leading to disease and death
There are many different definitions of . The scientific term for biological aging is . But the terms aging and senescence are often used interchangeably. Most definitions include some of the following common elements: Related to the passage of time Resulting from the accumulation of damage due to interaction with the environment Leading to a…
Aging is a complex process
Animal research and comparative biology provide insights into the mechanisms of aging
The process of evolution has led to very different life cycles of development, reproduction, and aging
Evolutionary theories propose that aging is a side-effect of natural selection
Genes can profoundly influence longevity
Aging results from damage to the organism, longevity is determined by genes to activate repair mechanisms