Evolution of lifespan

Area of Science:

• Evolutionary biology
• Developmental biology
• Gerontology

Background:

• Modern evolutionary synthesis and evo-devo explain evolution but have points of contention.
• These include biological time, evolutionary direction, macroevolution vs. microevolution, aging, and internal vs. external mediation.

Purpose of the Study:

• Introduce a new theoretical model for biological time control in vertebrates.
• Propose an intracellular oscillatory clock (life's timekeeper) as a key regulator.
• Investigate the role of this clock in evolution, lifespan, and aging.

Main Methods:

• Theoretical modeling of biological time control in vertebrates.
• Hypothesizing an intracellular oscillatory clock synchronized across cells.
• Analyzing the effects of clock frequency on lifespan, body/brain size, and behavior.

Main Results:

• A constant-frequency intracellular clock synchronizes across cells, regulating biological time.
• Slower frequencies correlate with extended lifespan, larger body/brain size, and advanced behavior.
• Faster frequencies lead to shorter lifespans and reduced development.

Conclusions:

• The intracellular clock provides a new genetic theory of aging and suggests a direction in vertebrate evolution toward longer lifespans.
• Lifespan extension may equate to macroevolution, with subsequent changes representing microevolution.
• Internal mediation, via lifespan extension, plays a significant role in evolution.