Genetic mapping of senescence traits
Linkage mapping is almost as old as the science of genetics in the modern age (Morgan 1911). The principle is relatively simple (see Jones et al. 1997): the further apart two
loci are on a
chromosome, the greater is the likelihood that crossing-over will occur between them at
meiosis. Quantifying this likelihood in a
segregating population generates an estimate of relative genetic distance. In this way, segregating Loci, in the form of
phenotypic characters (traits) and
DNA markers, can be located relative to each other on the
Genetic Map.
References
- Jones N, Ougham H, Thomas H (1997) Markers and mapping: we are all geneticists now. New Phytologist 137: 165-177.
- Morgan TH (1911) Chromosomes and associative inheritance. Science (New Series) 34: 636-638.
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