Figure 1.
(a) General appearance of a rumpless, tufted Araucana chicken. (b) For comparison, a tailed, non-tufted Araucana chicken.
Figure 2.
Genome-wide association for Rp and Et.
After 100,000 permutations, the genome-wide adjusted P values (−log10 Pgenome) for each SNP are plotted by chromosome (left). The raw P values for the most strongly associated chromosomes are plotted against chromosomal position (right). (a,b) 40 rumpless versus 11 tailed Araucana chickens (c,d) 30 tufted versus 28 non-tufted Araucana chickens.
Figure 3.
Physical map showing the relative positions of mapped genes and informative SNP markers within the 2.14 Mb rumpless haplotype on Gga 2. Light blue shading denotes the rumpless haplotype (alleles are shown in the top row). Dashed lines flank the critical interval wherein no tailed birds share the rumpless haplotype.
Figure 4.
Physical map showing the relative positions of genes and informative SNP markers in the associated region of Gga 15. Alleles of the tufted haplotype and positions are shown. Pale green bars denote heterozygosity for the tufted haplotype. Black bars denote homozygosity for the tufted haplotype. Dashed lines mark a 60 kb interval wherein all tufted birds are heterozygous for the haplotype.