After the publication of this work [1], we noticed that in Figure 2 the legends for panels ‘d’ and ‘e’ were accidentally interchanged. The correct legends are given below:

'd' should be: Venn diagram representing the numbers of upstream TSSs of reference genes identified in our transciptome assembly, in PGCs, early embryos and somatic tissues

'e' should be: Pie charts representing the proportion of TSSs overlapping CGIs, TEs or neither (NA) for reference genes, novel upstream TSSs of reference genes and novel genes. For each category, the proportion of each TE family is displayed as a bar graph

The original article was corrected.