What is phenotype?

What is phenotype?

• A. Physical traits
• B. Genetic makeup
• C. Two alleles
• D. Chromosome pairs

Answer: (A)

Phenotype is the observable traits of an organism—the physical characteristics you can see or measure—produced by how genes are expressed and by environmental influences. For example, eye color, height within a range, and even certain enzyme activities are phenotypic traits. The genotype is the genetic makeup—the specific genes and alleles carried by an individual. Two alleles and chromosome pairs describe that genetic information, not the outward form you observe. So phenotype corresponds to physical traits because it reflects the expressed characteristics, not just the underlying genetic blueprint.

Phenotype is the observable traits of an organism—the physical characteristics you can see or measure—produced by how genes are expressed and by environmental influences. For example, eye color, height within a range, and even certain enzyme activities are phenotypic traits. The genotype is the genetic makeup—the specific genes and alleles carried by an individual. Two alleles and chromosome pairs describe that genetic information, not the outward form you observe. So phenotype corresponds to physical traits because it reflects the expressed characteristics, not just the underlying genetic blueprint.