Table 1.

Average protein length, total and relative densities of conserved noncoding elements (CNE) and transposable elements (TE), and transcript numbers per gene within the human genome broken down according to gene size. Note that protein length and transcript numbers increase consistently with gene size, although intron length is primarily responsible for overall gene size. CNE density increases with gene size but is somewhat variable and TE density peaks between the 10,000bp-200,000bp then modestly decreases with gene size. The vast majority of genes in the human genome (91%) fall under 150,000bp in size. (See Casanova et al., 2019, Supplementary Material 2 for full published data.)

Gene Length (bp)	N (genes)	Protein Length (aa)	Total CNE (CNE/gene)	CNE Density (CNE/gene normalized by gene length)	Total TE (TE/gene)	TE Density (TE/gene normalized by gene length)	Number of Transcripts (per gene)
147–10,000	5,802	318	39	6.4	4	0.7	3.2
10,001–25,000	4,311	465	183	11.0	26	1.5	4.0
25,001–50,000	3,395	603	411	11.5	60	1.7	4.4
50,001–100,000	2,631	751	796	11.4	117	1.7	4.5
100,001–150,000	1,155	964	1,349	11.1	192	1.6	4.8
150,001–200,000	562	1,078	1,935	11.2	263	1.5	4.8
200,001–400,000	773	1,146	3,259	11.7	399	1.4	5.2
400,001–600,000	228	1,212	5,661	11.8	646	1.3	5.5
600,001–800,000	70	1,297	8,062	11.7	929	1.3	5.7
800,001–1,000,000	41	1,257	11,250	12.5	1,160	1.3	5.8
1,000,001–1,200,000	19	894	11,923	10.5	1,421	1.3	6.1
1,200,001–1,400,000	11	999	16,130	12.7	1,732	1.4	5.8
1,400,001+	17	1,846	24,229	13.0	2,325	1.3	6.6