Terminology you should know
speciation . synthetic theory . allopatric and sympatric speciation . hybrid depression . allopolyploidy . U-triangle . coevolution .
Concepts you should know, be able to explain, and remember
You can explain, what the term "allopatric" and "sympatric" speciation means
You can explain, why Mayr's speciation theory does not work well in plants
You can explain, how species barreers are maintained in Salvia
You can explain, why Darwin had problems to explain Angiosperm radiation and what the answer to his "abominable mystery" is
To think about
- Rapeseed (Brassica napus) is a allopolyploid from Brassica rapa and Brassica oleraceae. Sketch down the chromosomes in meiosis I of a hybrid B. napus x B. rapa and a hybrid B. napus x B. oleraceae.
- What happens if a mutant in the pin6 transporter (needed for staminal elongation) becomes recessive in Salvia glutinosa growing sympatrically with Salvia pratensis?
- Many plants attract pollinators by mimicking their sexual signals - why confers this strategy a selective advantage?
- What would happen, if Howea balmoriana would be forced to grow on the coral reef?
To read and deepen
- Genetics of flower colour and pollinator attraction in orchids. Kellenberger et al. 2019 (open access)
- Polyploidie und Pflanzenevolution (via KIT-Lizenz)
- The case of the Howea speciation. Savolainen et al. 2006 (open access)