What is an observable or measurable feature of an organism called?

What is an observable or measurable feature of an organism called?

• A. Genotype
• B. Mitochondrial DNA
• C. ABO blood type system
• D. Phenotype

Answer: (D)

Observable traits are called phenotype. This term covers anything you can see or measure, like height, eye color, or blood type, and even how a trait is expressed in a given environment. The phenotype reflects how the genetic makeup (genotype) interacts with environmental factors. The genotype is the underlying genetic code and isn’t usually visible on its own. Mitochondrial DNA is genetic material, not a trait you observe. The ABO blood type system is a way we categorize a phenotype based on gene expression, but the general term for an observable trait is phenotype.

Observable traits are called phenotype. This term covers anything you can see or measure, like height, eye color, or blood type, and even how a trait is expressed in a given environment. The phenotype reflects how the genetic makeup (genotype) interacts with environmental factors. The genotype is the underlying genetic code and isn’t usually visible on its own. Mitochondrial DNA is genetic material, not a trait you observe. The ABO blood type system is a way we categorize a phenotype based on gene expression, but the general term for an observable trait is phenotype.