Cer Element Characteristics
| C. elegans retrotransposable element | Genomic clone | Chromosome | Inserted element length (bp) | Integrase location relative to RT | LTR length/% identity | LTR end dinucleotides | Direct flanking repeat |
| Cer1 | f4432/par3 | III | 8,865 | 3′ | 491/100 | tg/ct | atca/atca |
| Cer1-1 | y43d4 | IV | 8,865 | 3′ | 491/99.6 | tg/ct | agtg/agtg |
| Cer2-0 | r03d7 | II | 9,846 | 3′ | 645/99.2 | tg/ct | attg/attg |
| Cer3-0 | f58h7 | IV | 8,720 | 3′ | 424/100 | tg/ct | ataa/ataa |
| Cer4-0 | t23e7/f15g10 | X | 5,081 | 3′ | 164/99.4 | tg/ta | atttc/atttc |
| Cer5-0 | t03f1 | I | 5,082 | 3′ | 211/100 | ag/ca | gttag/cttat |
| Cer5-1 | k02a2/y91d1a | II | 5,008 | 3′ | 61/96.7 | at/tt | agtat/agtgc |
| Cer6 | e03a3/t02c12 | III | 5,111 | 3′ | 218/100 | tg/ca | ctaaa/ctaaa |
| Cer6-1 | y102a5c | V | ∼7,230 | 3′ | ∼300 <95% | not identified | not identified |
| Cer7 | zc132 | V | 10,052 | 3′ | 327/99.7 | tg/ta | cccag/cccag |
| Cer8 | zk228/y51a2c/zk262 | V | 19,496 | 3′ | 300–600/5′ has large insertion or 3′ has deletion | tg/ca | gcccg/gcccg |
| Cer9 | y43f4a | III | 13,588 | 3′ | 517/99.8 | tg/ca | acttc/acttc |
| Cer10 | f07c7/y91b8a/c35b8 | X | 12,451 | 3′ | 648/99.7 | tg/ca | aagtt/aagtt |
| Cer10-1 | t23b12 | V | not identified | 3′ | not identified | not identified | not identified |
| Cer11 | t14g12 | X | 8,000 (coding) | 3′ | not identified | not identified | not identified |
| Cer12 | f55c9/f21d9 | V | 12,067 | 3′ | 537/99.6 | tg/ca | gaaac/gaaac |