Table 1. Egg length and nuclear number varies in blastoderm embryos of D. melanogaster, D. yakuba, and D. pseudoobscura.

Species	Embryos	Ave. No. Nuclei	Std Dev	Ave. egg length (µm)	Std Dev
D. melanogaster	2772	5974.1	339.12	393.8	30.75
D. yakuba	618	6127.8	348.13	451.8	22.74
D. pseudoobscura	932	5086.7	327.39	394.6	18.84

The number of embryos in each atlas is shown, along with the average number of nuclei and average egg length, with associated standard deviations (D. melanogaster data from [7]).