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Materialien
Bimont und Vieira (2007) Schrott-DNA Mitspieler der Evolution.
Spektrum der Wissenschaft, Mai 2007, 44-49<%ehB詃/'"Ȉ~˱WS IVZ.ԒT!Ќ~άŹX,Dd4aEY )g > pM3Ŭ(4[:P
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Molinier J, Ries G, Zipfel C, Hohn B (2006) Transgeneration memory
of stress in plants. Nature 442, 1046-1049
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1.
Indicate for the possible tautomers of the four bases, whether the
resulting mismatch mutation would correspond to a a transition or to a
transversion, respectively.
2. White flower colour
is a recessive trait. Can you explain why? You have a population of
Viola elatior, where 16 % of individuals have white flowers. What
percentage of the population is heterozygous for this trait? Remark: before you go to solve this problem,
refresh your knowledge on the Hardy-Weinberg-Equation.
3.
Sketch down the two
alternative scenarios for allopolyploidy. Where is the difference?
4. Give three reasons, why plant sexuality
was considered for a long time as unlikely.
5. Describe in shorthand the current view on
the evolutionary relationship between transposable elements and virusses.
2012 Peter Nick, Botanisches Institut 1, alle
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