Final answer:
The individual features of all organisms are the result of genetics and the environment. Genetics play a significant role in determining traits, but the environment also influences their expression.
Step-by-step explanation:
The individual features of all organisms are the result of genetics and the environment. Genetics, in the form of inherited genes, play a significant role in determining an organism's traits. These genes are passed down from the parents to their offspring, resulting in variations in characteristics among individuals.
However, the environment also influences the expression of these genetic traits. Environmental factors such as sunlight, temperature, and food availability can affect how genes are expressed in an organism's phenotype. For example, exposure to sunlight can darken the skin color of a person who spends more time outdoors.
Additionally, some traits are entirely determined by the environment. For certain species, such as turtles, the temperature at which eggs are incubated determines the sex of the offspring. This phenomenon, known as temperature-dependent sex determination, shows that the environment can override genetic determinants.