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The gradation of whole-muscle tension depends on the number of ____________________ that contract.
Directional Selection
A mode of natural selection where individuals with traits on one end of the spectrum are more likely to survive and reproduce, causing a shift in the population's genetic makeup.
Tree-Dwelling Frog
Amphibians that spend a significant portion of their lives in trees, exhibiting adaptations such as suction cup-like toe pads to aid in climbing.
Heritable Characteristic
A trait that can be passed from parents to their offspring through genes.
Quantifiable
Capable of being measured or expressed as a numerical value.
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