Is "you look like your dad" a simile? [closed]

Is "you look like your dad", or indeed any statement of looking like something in which the description is meant literally (unlike e.g. you look like hell), a simile?

Well, if you look well at the definition of the simile, the answer to your question becomes evident. A simile is

a figure of speech comparing two unlike things that is often introduced by like or as (as in cheeks like roses) (M-W)

Certainly, cheeks are not roses, it is their colour that is the feature they have in common with those particular flowers. Things are different in your example. The fact that two persons look alike, is a physical description between two beings or entities that are not unlike but alike. Therefore, it is not a simile.