While studying a sample for height differences, researchers observed that the height of the participants varied significantly regardless of whether the participants' parents were short or tall. This suggests that the physical characteristic of height is most likely an example of

polygenetic inheritance

Explanation:

polygenetic inheritance refer to many genes means personal characteristics and traits and inherited from mixture of genes and from parents alleles , in this not a single gene is over dominant in fact is shows mixture of genes. is generally refers incomplete dominance. Example of such polygenetic inheritance observe in skin. eye color, height and weight.  So traits and characteristic physical o biology determined and controlled by many genes is polygenetic inheritance.

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