Figure 1.

Distribution of L, a, and b values of Lueyang black-boned chicken eggs. Eggshell color of Lueyang black-boned chickens (n = 846) was quantitatively assessed by the L*a*b color space. Each point or open circle represents a sample used in this color-measured experiment. Green points indicate samples used in the re-sequencing experiment. Blue points indicate samples used in the re-sequencing and expression experiments. Blue open circles indicate samples that were only used in the expression experiments. Green transparent oval highlights color distribution of BGC eggs, and brown transparent oval for Non-BGC eggs. Abbreviation: BGC, blue-greenish coloration.