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21. What enables a gene to code for different versions of a trait in different organisms?
A. differences in the sequence of alleles on a chromosome

B. differences in the sequence of genes on a chromosome

C. differences in the sequence of amino acids in DNA

D. differences in the sequence of nucleotide bases in DNA,

Respuesta :

W0lf93
The best answer is D. All of the other answers have important terms and considerations in DNA replication, but the sequence of alleles, genes, and amino acids are not the thing that actually causes different versions of traits, it is ultimately the sequence of the individual nucleotide bases in DNA.

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