19) What is the most direct relationship between genes and phenotypes expressed

Question

19) What is the most direct relationship between genes and phenotypes  expressed in individuals?
A. Genes code for chromosomes, which are responsible for individual phenotypes.  
B. Genes encode individual phenotypes, which in turn regulate expression of specific proteins.  
C. Environmental signals primarily directly control expression of genes responsible for individual phenotypes.
D. Genes determine the structure and function of proteins, which are responsible for individual phenotypes.

please explain WHY the answer is what it is

Explanation / Answer

19) What is the most direct relationship between genes and phenotypes  expressed in individuals?

D) Genes determine the structure and function of proteins, which are responsible for individual phenotypes.

Genes are the small portion of DNA within the genome that are responsible to code for proteins. They contain the instruction for our individual characteristics such as eye color or hair color. Changes in genes can alter the phenotype of an individual.

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