Figure 5

Comparative analysis of intron 4 sequence of the TYR gene of a recessive white chicken, a colored chicken and the Red Jungle Fowl. I: A complete ALV sequence was found in the recessive white chicken, inserted in the reverse orientation as compared to the usual ALV sequence numbered from 1 to 7525. II: A and A' or B and B' sequences respectively have up to 90% identity in the Red Jungle Fowl intron 4 sequence, and both A and A' sequences end by a polyA repeat (45 bp). Both of the recessive white and the wild type colored INRA chickens do not have B and A' sequences in their intron 4. The recessive white intron 4 "A" region contains the polyA sequence but not the "A" region of the wild type colored chicken intron 4. III: This region contains a stretch of N signals (chromosome 1: position 179546417–1795546627) in the published Red Jungle Fowl genome sequence that we were able to replace by a 1 kb informative sequence in both the recessive white and the wild type colored INRA chicken.