Table 1.

Summary of the transcription units found in the syntenic regions of the C. papaya (Cp) X-specific and autosomal BACs and the orthologous V. monoica (Vm) BACs

	Total numbers of sequences
Types of sequences	Vm		Cp X or autosome
Combined transcription units (genes and pseudogenes for both species)		27
Total transcription units	19		18
Transcription unit pairs (present in both species)		10
Species specific transcription units	9		8
Combined intact protein-coding transcription units		25
Intact protein-coding transcription units found in each species	15		16
Gene pairs present in both species*		6
Genes specific to one species	9		10
Pseudogenes	0		4
Copy present elsewhere in the papaya whole genome	3		1
Sequences of unknown origin	6		5
Combined pseudogene transcription units		6
Total pseudogene transcription units†	4		2
Combined pseudogene-gene pairs		4
Pseudogene-gene pairs	4		0
Pseudogenes specific to one species	0		2
Combined transcription units‡		5
Total transcription units (all are functional gene pairs)	5		5

*None of these have a copy elsewhere in the papaya whole genome.

^†No pair of sequences is a pseudogene in both species.

^‡There are no pseudogenes, and no sequences are specific to one species.