We also assign alleles to each copy number event describing the parental chromosome ratio following each duplication or loss.
Conclusively, the transient imprinting status of the 10-DAP-specific MESL was likely attributed to the dynamically changed expression level and parental dosage ratio at 10 DAP compared with 7 and 15 DAP.
At the significance level of p = 0.01, the parental expression ratio of 2,220, 2,451 and 2,136 siRNA loci were detected to have a significant deviation from 2 m:1p in both of the reciprocal crosses, and among which, 59, 1,188 and 110 loci exhibited a parent-of-origin pattern at 7, 10 and 15 DAP, respectively.
The analysis of probesets showed that nearly 61% of all genes in SN are expressed at mid-parent level corresponding to either 1 1 or 1 2 parental expression ratios.
Crosses between two parents with different ploidy levels result in a change of parental genome ratios by adding either additional maternal or paternal copies to the embryo and endosperm.
* P value is subjected to Benjamini and Hochberg (1995) correction for multiple test comparison Most genes in the synthetic allopolyploid wheat were expressed at mid-parent level fitting the expectations of either 1 1 or 1 2 parental expression ratios, which indicates that polyploidization did not have detectable impact on their regulation.
Potential sex and age differences in offspring and parental digit ratios in the correlative data from 2005 were examined using general linear mixed models, where age (fledgling or adult) and sex and their interaction were fitted as a fixed factors and nest of origin as a random factor to control for the resemblance of digit ratios between family members (Littell et al. 2006).
In particular, sex-biased dispersal provides the conditions for the evolution of biased sex ratios: parental manipulation of the sex ratio allows individuals to avoid kin competition [ 13, 14], to benefit from local resource enhancement [ 15], or to select habitat in a heterogeneous environment [ 16].
