Claim · model-written summary
The frequency of genome size changes decreased exponentially as change magnitude increased.
Not reportedTaxon
Verbatim
e0“The frequency of changes in genome size appears to decrease exponentially with the magnitude of change.”
Title
Evolution of Genome Size in the Grasses
Gustavo Caetano-Anollés Crop Science 2005. doi:10.2135/cropsci2004.0604
Other claims from this paper (5)
- Observation Genome size changes mostly stayed within twofold and rarely exceeded threefold.
- Observation The increase-to-decrease ratio rose across Ehrhartoideae, PACCAD and Pooideae in that order.
- Observation All major clades had both genome size increases and decreases, with notable changes in Pooideae and Chloridoideae.
- Observation The reconstructed grass ancestor had 3.0 to 5.2 pg DNA per 2C nucleus, depending on tracing method.
- Observation Character evolution models gave different frequencies and levels of genome size change.
Avena sativa