Dr. Stevens is examining the DNA sequences of a group of mice. He notices that in one of the mice, one nucleotide pair is substituted with another in the part of the DNA sequence that codes for fur color. However, despite the substitution, the mouse still has the same fur color as the other mice with the correct DNA sequence. Why doesn't the substitution of nucleotides in the mouse change its phenotype, or physical characteristics?

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Tommy Camacho

4 December, 00:43

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Casey Garcia · Answer 1

The substituted nucleotide has the same directions as the original nucleotide.