| Range |
42,000-56,000 unitless
|
| Organism |
Corn Zea mays |
| Reference |
Haberer et al., Structure and architecture of the maize genome. Plant Physiol. 2005 Dec139(4):1612-24. p. 1622 left column, 2nd paragraphPubMed ID16339807
|
| Method |
"Of the bacterial artificial chromosomes (BACs) sequenced in this study, 80% were
found to contain genes. Full-length genes average 4 kb
in length, somewhat larger than in rice and Arabidopsis.
Longer introns in maize, due in part to transposon
insertions, are responsible for most of the increase
in gene size. The density of genes is widely variable,
ranging from 0.5 to 10.7 genes per 100 kb over a relatively
even distribution, and does not suggest that
a large fraction of genes are tightly clustered in islands." |
| Comments |
"Based on these data, [researchers] estimate that maize has
roughly 42,000 to 56,000 genes, substantially more
than rice or Arabidopsis. This reflects the history of
the maize genome, which includes a relatively recent whole genome duplication
(WGD) event, subsequent gene loss, and expansion of
gene families. The WGD also appears to contribute to
an increase in intergenic space void of apparent repeat
sequences." See BNID 110565 |
| Entered by |
Uri M |
| ID |
105521 |