Some traits such as earlobe attachment, blood type, and the presence or absence of dimples, have limited variation throughout human population because they are controlled by a single cell other traits such as skin color and han height are widely variable throughout the human population because

They are controlled by more than one gene.

Explanation:

Did the study island lesson. Also, they are widely variable because of the genes together, not one, but multiple.

the match duh

explanation:

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.