Table 2.

Classification of DEGs via gene expression patterns.

Tissues	Hybrids	Non-Addictive	Over-Dominance	High-Parent Dominance	Addictive	Low-Parent Dominance	Under-Dominance
Muscle	Mule	561	1713	1397	434	1040	2051
	Hinny	1135	2281	1207	1371	1160	1459
Brain	Mule	688	811	1212	625	503	495
	Hinny	992	1369	1431	826	792	1148
Skin	Mule	1008	1394	1532	1223	1069	1141
	Hinny	1363	2294	1189	1343	1237	1665

Hybrids are mule or hinny; P, paternal lines represent male horse or male donkey; M, maternal lines represent female horse or female donkey. Additivity, mule or hinny = $\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.$ (horse + donkey); non-additivity, mule or hinny > $\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.$ (horse + donkey) or mule or hinny < $\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.$ (horse + donkey). High-parent dominance, mule or hinny = P > M or mule or hinny = M > P; low-parent dominance, mule or hinny = P < M or mule or hinny = M < P; over-dominance, mule or hinny > P and mule or hinny > M; under-dominance, mule or hinny < P and mule or hinny < M.