The number of mat-mono genes that were common in four cell types from CBs was notably higher than the number of pat-mono genes (Fig. 4f, g) and some (e.g., Coa5, Ndufs1, Ndufa10) were critical for known cardiac related human disease phenotypes (e.g., Hypertrophic cardiomyopathy-HP:0001639 – Padj= 9.942 × 10−4; Fig. 4h), whereas pat-mono genes were not (Supplementary Data 4). This evidence concerns the gene COA5 and hypertrophic cardiomyopathy.