Table 3.

IGF1 sites potentially associated with body size. Sites within the IGF1 gene and flanking genomic regions that are significantly associated with body size in cetaceans

Site typea	Small cetacean allele	Large cetacean allele	Blue whale chromosome 10 coordinate	Genomic feature(s)	Multiple alignment column
1	C	T	85,170,164	Intergenic region 5′ of IGF1	24,474
1	A	C	85,169,891	Intergenic region 5′ of IGF1; LINE element L2c	24,791
2	C	T	85,160,822	Intron 2	35,626
2	G	A	85,160,446	Intron 2	36,017
1	G	C	85,150,447	Intron 2	48,867
1	A	G	85,140,848	Intron 2; LINE element L2b	62,044
1	C	T	85,140,276	Intron 2	62,965
2	C	T	85,132,164	Intron 2; LINE element L2d	78,042
2	C	T	85,126,807	Intron 2	87,228
1	G	A	85,118,402	Intron 2	99,043
2	A	G	85,112,779	Intron 3	106,724
1	C	T	85,108,387	Intron 3-4	113,202

^aSite type 1 is where 3 large whales, blue, minke, and sperm, have a different allele from all other artiodactyls (Fig. 5c). Type 2 is where smaller cetaceans have a different allele compared to the 4 largest whales, blue, minke, sperm, and orca, and terrestrial artiodactyls (Fig. 5d).