What is a phenotype of an organism

a structure that carries genetic information

an observable trait

a section of DNA

a combination of alleles

A phenotype of an organism is an observable trait. It is the physical expression or characteristic that results from the interaction between an organism's genotype (the genetic information it carries) and its environment. Phenotypes can include traits such as eye color, height, behavior, and any other observable features.

A phenotype of an organism is an observable trait. It refers to the physical characteristics, behaviors, and other traits that are observed in an individual. It is the result of the interaction between an organism's genotype (the genetic information carried by the organism) and its environment. While the genotype determines the potential range of phenotypic traits, the actual expression of those traits is influenced by various environmental factors. Therefore, the phenotype is the outward manifestation of an organism's genetic makeup.

The correct answer is: an observable trait.

To understand the definition of a phenotype, it is essential to have some background on genetics.

Genetic information is stored in DNA, which is made up of sequences of nucleotides. These nucleotides contain instructions that determine the characteristics or traits of an organism. These traits can be physical, such as the color of an organism's eyes or the shape of its leaves, or they can be physiological, such as the ability to digest certain foods or produce a particular enzyme.

The phenotype is the observable or detectable trait that results from the expression of specific genes and their interaction with the environment. It is what we can see or measure in an organism, like the color of its hair, the presence of winged or wingless individuals in a population, or the blood type of an individual.

In summary, while a section of DNA carries genetic information, and a combination of alleles contributes to the genetic makeup of an organism, a phenotype refers specifically to the observable traits of an organism.