Mutagenesis Flashcards
1
Q
What causes sectorial chimeras?
A
They result from mutations which affect sections of the apical meristem, the altered genotype extending through all the cell layers.
2
Q
What causes periclinal chimeras?
A
Subsequent divisions forming an entire layer of the mutated type.
3
Q
What causes mericlinal chimeras?
A
A mutated cell layer may be maintained on only one portion of the meristem.
4
Q
Why are many mutations not passed on?
A
Many mutations do not hit the reproduction pathway.
5
Q
What is self-incompatibility?
A
A genetically determined system to prevent self-fertilisation.
6
Q
Why is Arabidopsis thaliana used as a model organism?
A
Small. Fully sequenced genome. Fast generation time. Small genome. Self-fertile. Transposons for tagging available.
7
Q
How can you induce mutations?
A
Using seeds.
Ionising radiation.
Chemicals.
Biological (insertions).
