Genome size in conodonts (chordata): inferred variations during 270 million years - PubMed (original) (raw)
Genome size in conodonts (chordata): inferred variations during 270 million years
S C Morris et al. Science. 1988.
Abstract
DNA is too unstable to be preserved during fossilization, but it still seems possible to infer the genome content of fossils because in every group of organisms investigated cell size is proportional to quantity of DNA. Accordingly, information on macroevolutionary trends in genome size through millions of years is potentially available. This survey of inferred variation in genome content in fossils is based on measurements of epithelial cells in extinct conodonts over a period of 270 million years. Why genome size varies so widely amongst living organisms is a subject of continuing debate. Paleontology offers a distinct temporal perspective, but lack of data on conodont paleoecology make the proposed adaptive explanations for genome variation difficult to test.
Similar articles
- Morphological and developmental macroevolution: a paleontological perspective.
Valentine JW, Jablonski D. Valentine JW, et al. Int J Dev Biol. 2003;47(7-8):517-22. Int J Dev Biol. 2003. PMID: 14756327 Review. - Presence of the earliest vertebrate hard tissue in conodonts.
Sansom IJ, Smith MP, Armstrong HA, Smith MM. Sansom IJ, et al. Science. 1992 May 29;256(5061):1308-11. doi: 10.1126/science.1598573. Science. 1992. PMID: 1598573 - Climate and growth form: the consequences for genome size in plants.
Ohri D. Ohri D. Plant Biol (Stuttg). 2005 Sep;7(5):449-58. doi: 10.1055/s-2005-865878. Plant Biol (Stuttg). 2005. PMID: 16163609 Review. - What does palaeontology contribute to systematics in a molecular world?
Smith AB. Smith AB. Mol Phylogenet Evol. 1998 Jun;9(3):437-47. doi: 10.1006/mpev.1998.0488. Mol Phylogenet Evol. 1998. PMID: 9667992
Cited by
- 470-Million-year-old black corals from China.
Baliński A, Sun Y, Dzik J. Baliński A, et al. Naturwissenschaften. 2012 Aug;99(8):645-53. doi: 10.1007/s00114-012-0947-8. Epub 2012 Jul 12. Naturwissenschaften. 2012. PMID: 22790835 Free PMC article. - Genome size scaling through phenotype space.
Knight CA, Beaulieu JM. Knight CA, et al. Ann Bot. 2008 Apr;101(6):759-66. doi: 10.1093/aob/mcm321. Epub 2008 Jan 24. Ann Bot. 2008. PMID: 18222911 Free PMC article. - Evolution of DNA amounts across land plants (embryophyta).
Leitch IJ, Soltis DE, Soltis PS, Bennett MD. Leitch IJ, et al. Ann Bot. 2005 Jan;95(1):207-17. doi: 10.1093/aob/mci014. Ann Bot. 2005. PMID: 15596468 Free PMC article.
LinkOut - more resources
Full Text Sources