What is phenotype?

What is phenotype?

• A. Genetic makeup
• B. Number of chromosomes
• C. Type of gametes
• D. What it looks like

Answer: (D)

Phenotype is the set of observable traits an organism has—the features you can see or measure, like height, color, or shape, and even how it functions. It’s what results when the genetic instructions (the genotype) interact with the environment. So the correct choice captures that outward appearance and measurable traits. The genetic makeup refers to the genotype, which is the underlying DNA sequence; the number of chromosomes is a genomic property, not a trait you observe; and the type of gametes describes reproductive cells, not the organism’s visible characteristics.

Phenotype is the set of observable traits an organism has—the features you can see or measure, like height, color, or shape, and even how it functions. It’s what results when the genetic instructions (the genotype) interact with the environment. So the correct choice captures that outward appearance and measurable traits. The genetic makeup refers to the genotype, which is the underlying DNA sequence; the number of chromosomes is a genomic property, not a trait you observe; and the type of gametes describes reproductive cells, not the organism’s visible characteristics.