Figure 1.

3' UTRs of maternal genes are under-represented for short lengths. 3' UTR lengths in six animals comparing all maternally expressed core or metazoan genes (solid curves) versus all other core or metazoan genes in the genome (dotted curves). (a) Core genes (minimum P-value; percentile at which the minimum P-value was detected; top most percentile showing significance): C. elegans (P < 10^-18; 20th; 100%); D. melanogaster (P < 10^-9, 25th, 100%); D. rerio (P < 10^-6, 20th , 85%); G. gallus (P < 10^-5, 65th, 100%); M. musculus (P < 10^-12, 25th, 100%); H. sapiens (P < 10^-12, 25th, 100%). (b) Metazoan genes: C. elegans (P < 10^-26, 20th, 100%); D. melanogaster (P < 10^-30, 35th , 100%); D. rerio (P < 10^-6, 45th, 100%); G. gallus (P < 10^-17, 40th, 100%); M. musculus (P < 10^-23, 20th, 100%); H. sapiens (P < 10^-18, 35th, 100%).