Which does a reference point provide? A-a position from which to measure future distanceB- a set of standard units for measuring displacement C-a standard method for evaluating variables D-a method for determining the speed of an object

a position from which to measure future distance

Explanation:

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small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

the answer is c on e2020, bud.