When a trait, such as height in humans, is continuously variable over a wide phenotypic range controlled by multiple factors, it is reasonable to suspect that it is exhibiting: epistasis

, , epistasis,

variable expressivity

, , variable expressivity ,

polygenic inheritance

, , polygenic inheritance ,

complete dominance

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Explanation:

before it leaves the nucleus of a eukaryotic cell, mrna is altered in the following ways: - a cap is added to the 5' end of the mrna molecule; - a poly a tail is added to the 3' end; - introns are removed and exons are spliced together.

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.