Variable rates of evolution among Drosophila opsin genes.

@article{Carulli1992VariableRO,
  title={Variable rates of evolution among Drosophila opsin genes.},
  author={John P. Carulli and Daniel L. Hartl},
  journal={Genetics},
  year={1992},
  volume={132 1},
  pages={
          193-204
        }
}
DNA sequences and chromosomal locations of four Drosophila pseudoobscura opsin genes were compared with those from Drosophila melanogaster, to determine factors that influence the evolution of multigene families. Although the opsin proteins perform the same primary functions, the comparisons reveal a wide range of evolutionary rates. Amino acid identities for the opsins range from 90% for Rh2 to more than 95% for Rh1 and Rh4. Variation in the rate of synonymous site substitution is especially… CONTINUE READING
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