Fact: current life forms are
extremely variable,
both
within
and among species.
Evolution accounts for variation
among living organisms.
[Variation occurs in time
and space]
What is the "Theory of
Evolution"?
Explanation of observed patterns of temporal
& spatial variation
in
terms
of biological and physical processes.
Theory: an organized set of
facts, principles, & hypotheses;
not
a
"guess", not "just a theory"
What is Evolutionary
Genetics?
Understanding the genetic
basis of variation
1900
~ 1953: analysis of phenotypes to infer
nature of genotypes
> 1953:
analysis of molecular nature of genes
> 2000:
analysis of organization & function of genomes
Course themes:
Quantification & interpretation of organismal genetic variation
phenotypes, chromosomes, proteins, RFLPs,
DNA sequences, DNA micro-satellites, genomes,
etc.
Laboratory exercises introduce analytical
methods.
Population Genetics models
changes in allele frequencies variation:
Single-locus models of short-term, small-scale change within
species (micro-evolution)
Evolutionary Genetics analyzes multi-locus
variation among
species (macro-evolution)
Multi-locus
/ Genomic models of large-scale organization &
long-term modification
Molecular Biology provides DNA data
for analysis of evolution
Systematics provides
evolutionary genealogies to explain organismal differences
Genomics characterizes gene
content of species & organisms
Proteomics analyzes
expression patterns in complete gene systems
Bioinformatics provides computational
methods for extraction of data
Th. Dobzhansky (1900 - 1975):
"Nothing
in biology makes sense except in the light of evolution."