the boys in this picture look alike because their bodies contain identical\ncarbohydrates.\nlipids.\nnucleic…

Brief Explanations:

Identical appearance in individuals, like twins, is primarily determined by genetic material. Nucleic acids, specifically DNA, carry genetic information that dictates physical traits. Carbohydrates, lipids, and proteins do not store or transmit hereditary characteristics responsible for similar appearances.

Answer:

nucleic acids.