Which macromolecule is primarily responsible for producing t

Which macromolecule is primarily responsible for producing the phenotype of an organism?

a. proteins
b. carbs
c. lipids
d. DNA
e. mRNA

Solution

(a) Proteins

Phenotype is the physical characteristics of an organism and even though the DNA is the blueprint, but the proteins produced by this DNA only determine our physical appearance. In this aspect, proteins are the macromolecules which are primarily responsible for producing the phenotype of an organism.