5. The physical appearance of a trait is called:
a. the genotype.
b. the phenotype.
c. an allele.
d. a trait.
e. a gene.

Question

5.	The physical appearance of a trait is called:
a.	the genotype. 
b.	the phenotype. 
c.	an allele. 
d.	a trait. 
e.	a gene.

alphadxg · Answer

PHYSICAL APPEARANCE = Phenotype.

A phenotype (from Greek phainein, meaning "to show", and typos, meaning "type") is the composite of an organism's observable characteristics or traits, such as its morphology, development, biochemical or physiological properties, phenology, behavior, and products of behavior (such as a bird's nest). A phenotype results from the expression of an organism's genes as well as the influence of environmental factors and the interactions between the two. When two or more clearly different phenotypes exist in the same population of a species, the species is called polymorph.

The genotype of an organism is the inherited instructions it carries within its genetic code. Not all organisms with the same genotype look or act the same way because appearance and behavior are modified by environmental and developmental conditions. Likewise, not all organisms that look alike necessarily have the same genotype.