The appearance of a novel phenotype resulting from the substitution of a single base pair might be due to
A) change in the amino acid sequence only.
B) change in the amount of protein expressed.
C) alteration in a gene that codes for a nontranslated RNA.
D) change in the developmental time or location at which a gene is expressed.
E) All of the choices are possible consequences of a single base pair substitution.

Question

Quizplus · Accepted Answer

A single base pair substitution can result in a change in the amino acid sequence of a protein, leading to a new phenotype. It can also alter the amount of protein expressed or the developmental time/location at which a gene is expressed. Additionally, it can result in an alteration of a gene that codes for a nontranslated RNA, leading to a new phenotype as well. Therefore, all of the choices are possible consequences of a single base pair substitution.

The Appearance of a Novel Phenotype Resulting from the Substitution