Evidence for Variable Selective Pressures at MC1R

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Presentation transcript:

Evidence for Variable Selective Pressures at MC1R Rosalind M. Harding, Eugene Healy, Amanda J. Ray, Nichola S. Ellis, Niamh Flanagan, Carol Todd, Craig Dixon, Antti Sajantila, Ian J. Jackson, Mark A. Birch-Machin, Jonathan L. Rees The American Journal of Human Genetics Volume 66, Issue 4, Pages 1351-1361 (April 2000) DOI: 10.1086/302863 Copyright © 2000 The American Society of Human Genetics Terms and Conditions

Figure 1 MC1R variation. a, Divergent codons and amino acids, between a chimpanzee sequence and the human consensus sequence, with the codon position indicated (blackened circles). Nucleotides that are different from those of the human consensus sequence are shown in uppercase letters. b, Variant haplotypes. The variants are labeled by a single defining amino acid change compared with the human consensus sequence. Both the codon position (numbers) and variant codons are indicated (blackened circles). Nucleotide that differ from those of the consensus sequence are shown in uppercase letters. The American Journal of Human Genetics 2000 66, 1351-1361DOI: (10.1086/302863) Copyright © 2000 The American Society of Human Genetics Terms and Conditions

Figure 2 Gene trees connecting MC1R haplotypes through mutation events. Mutations in codon sequences, relative to the consensus sequence, are shown in uppercase letters. The MC1R consensus sequence is indicated (blackened circles), as is the root haplotype (gray-shaded circles), which is determined by comparison with a chimpanzee sequence. Variant haplotypes are labeled by a single defining amino acid change, compared with the human consensus sequence. Circled areas for haplotypes are proportional to their frequencies, not to sample numbers. a, European and Asian samples. b, African samples. The American Journal of Human Genetics 2000 66, 1351-1361DOI: (10.1086/302863) Copyright © 2000 The American Society of Human Genetics Terms and Conditions