The Sequence of DNA Differs Among Individuals Within a Species

Question

The sequence of DNA differs among individuals within a species. This is the basis for
A)mutation.
B)protein structure.
C)base pairing.
D)variations in phenotypes.

Accepted Answer

Variations in the sequence of DNA among individuals can lead to variations in the phenotypes (observable traits) of those individuals. This is because DNA codes for proteins, which play essential roles in determining an organism's physical and biochemical characteristics. Mutations may contribute to some of these variations, but not all differences in DNA sequence are due to mutations. Base pairing refers to the way that the nucleotides in DNA bind to each other, and protein structure is determined in part by the sequence of amino acids in the protein, which is coded for by DNA.