Final answer:
The term used to describe the genetic makeup of an organism is 'genotype'. It refers to the specific combination of alleles an organism possesses and determines the traits it will exhibit.
Step-by-step explanation:
The correct term used to describe the genetic makeup of an organism is genotype. The genotype refers to the specific combination of alleles, or versions of a gene, that an organism possesses. It is responsible for determining the traits and characteristics that an organism will exhibit.
For example, in humans, the genotype for eye color can be represented by different combinations of alleles, such as BB (brown eyes), Bb (brown eyes), or bb (blue eyes).
Understanding an organism's genotype is important in the study of genetics and inheritance, as it helps scientists predict and understand how certain traits are passed down from one generation to the next.
Learn more about Genetic makeup of organisms