Fig. 4

MtDNA copy number in metaphase II oocytes. Bos taurus oocytes harbouring Bos taurus mtDNA (n = 55) and Bos indicus mtDNA (n = 39) and Bos indicus oocytes harbouring Bos indicus mtDNA (n = 20) were assessed for mtDNA copy number. Mean values (± SEM) are shown. The differences were analysed for significance by one-way ANOVA with Tukey’s multiple comparisons test using GraphPad Prism version 6.01. **,**** indicate P < 0.01 and P < 0.0001, respectively