The physical characteristics of an organism are called its a. genetics b. heredity c. phenotype d. genotype

Step 1: Define the Problem

Identify the term that describes the physical characteristics of an organism.

Step 2: Break Down the Problem

Understand the definitions of each option:

• Genetics: The study of genes and heredity.
• Heredity: The passing of traits from parents to offspring.
• Phenotype: The set of observable characteristics or traits of an organism.
• Genotype: The genetic makeup of an organism.

Step 3: Apply Relevant Concepts

The physical characteristics of an organism are the traits that can be observed, which corresponds to the definition of phenotype.

Step 4: Analysis, Verify and Summarize

Verify the definitions:

• Phenotype refers to observable traits, confirming it as the correct answer.

Final Answer

c. phenotype