15.5
Molecular Evolution
, Molecular Evolution
Types of Questions
•
How do genomes, DNA, and protein sequences evolve?
•
Dynamics and mode of change
•
Rates of change
•
How are genes and organisms evolutionarily related?
•
Phylogenetics systematics/building trees & networks
•
Species concepts (allopatric/parapatric/sympatric)
, Molecular Evolution
Different time scales
•
Short‐term: ‘population genetics’ tends to focus on genetic
changes between generations and within species or between
very closely related species.
•
Long‐term: ‘molecular systematics’ tends to focus on genetic
changes over many generations; departures from Hardy‐
Weinberg equilibrium can become significant, leading to
speciation.
Molecular Evolution
, Molecular Evolution
Types of Questions
•
How do genomes, DNA, and protein sequences evolve?
•
Dynamics and mode of change
•
Rates of change
•
How are genes and organisms evolutionarily related?
•
Phylogenetics systematics/building trees & networks
•
Species concepts (allopatric/parapatric/sympatric)
, Molecular Evolution
Different time scales
•
Short‐term: ‘population genetics’ tends to focus on genetic
changes between generations and within species or between
very closely related species.
•
Long‐term: ‘molecular systematics’ tends to focus on genetic
changes over many generations; departures from Hardy‐
Weinberg equilibrium can become significant, leading to
speciation.