Figure 1.

Transcriptomic analysis for ovary of White Leghorn and Beijing You chicken in sexual maturity and peak laying periods. (A) PCA plot for ovary transcriptomes of 2 breeds in 2 laying periods. (B) The global gene expression correlation of different samples. (C) Volcano map of differentially expressed genes between White Leghorns and Beijing You Chicken at sexual maturity. (D) Volcano map of differentially expressed genes between White Leghorn and Beijing You chicken in peak laying periods. WW and YY denote White Leghorn and Beijing You chicken, respectively; s1 and s2 denote sexual maturity and peak laying periods, respectively.