Other than genetics, what could influence the phenotype (what you see) of an organism? hint: sunburned
person or an overweight individual who has no family history.

Other than genetics, environmental factor influence the phenotype of an organism.

Explanation:

Phenotype is the external appearance of organism mostly determined by the gene.The environmental factors such as, humidity, temperature, oxygen levels  etc. also makes considerable impact on phenotype of an organism. The environmental factor can change the phenotype of two organism even with the exact same genetics.For example, among the twins if one is raised in the cold Himalayas and the other one in hot plain area then their appearance will be drastically different.