Biodiversity papers Flashcards
When did angiosperms take over the fucking world?
90MYA
… and ferns are a … group and the closest living relatives to …
Horsetails, monophyletic, seed plants
What has our knowledge of angiosperm phylogeny recently been increased by the concurrence of?
Multigene sequence analyses
How many representatives from all the main lineages of land plants were analysed in the plant study? What was studied?
35
Morphology and 4 genes (3 plastids and nuclear small-subunit ribosomal DNA)
How many aligned base pairs were obtained for the plant study?
5072
The plant data sets were analysed using both MP (?) and ML (?) optimisation criteria
Maximum parsimony
Maximum likelihood
+ bootstrap (BS) analyses (100%)
How many genes were looked at in the vertebrate study?
658
representing 207 vertebrate species
At least … lineages of placental mammals arose more than …. ago
5
100 million years
(radiation predated extinction event)
Most of the modern vertebrate orders seem to have diversifies before …
the cretaceous/tertiary extinction of the dinosaurs
When do the earliest ancestors of mammals and birds first appear in the carboniferous period?
About 310 MYA - diverged into synapsids and diapsids
When was the marsupial placental split?
173MYA according to molecular studies
What is arborescence?
Tree growth habit
What is the outer corky layer called?
Phellem
