Table 3:
Pseudogenes structure organization.
|
Group |
Characteristics |
Mechanism of
amplification |
|
Group I |
Duplications of snRNA genes and their flanking
sequence. |
|
|
Group II |
Processed snRNA pseudogenes that generally end
with an A-rich tail and are flanked by TSD. |
Reverse transcription initiates directly on the
snRNA by a template choice. |
|
Group III |
Processed pseudogenes that are heavily
30-truncated and flanked by TSD. |
Reverse transcription initiates directly on the
snRNA by a template choice. |
|
Group IV |
snRNA pseudogenes that form chimeras with a
non-LTR retrotransposon. |
Template switching. |