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Macro vs Micro
Transcript of Macro vs Micro
Macro vs Microevolution
Microevolution refers to smaller evolutionary changes (typically described as changes in allele frequencies) within a species or population.
is evolution on a scale of separated gene pools. Macroevolutionary studies focus on change that occurs at or
above the level of species.
Paleontology, evolutionary developmental biology and comparative genomics/biology
contribute most of the evidence for the patterns and processes that can be classified as macroevolution.
The process of
may fall within the purview of either, depending on the forces thought to drive it.
This change is due to four different processes: mutation, selection (natural and artificial), gene flow, and genetic drift.
concerns itself with observing
in the wild. Typically, observable instances of evolution are examples of microevolution;
for example, bacterial strains that have antibiotic resistance.
over time may lead to
or the appearance of
sometimes classified as
is the branch of biology that provides the mathematical structure for the study of the process of
Macro and microevolution describe fundamentally identical processes on different time scales
first coined the terms
in 1927 in his German language work, "Variabilität und Variation".
occurs on the timescale of human lifetime
Microevolution is reductionist, but macroevolution is holistic.
Each approach offers different insights into the evolution process.
Macroevolution can be seen as the sum of long periods of microevolution, and thus the two are qualitatively identical while being quantitatively different.
An example of
is the appearance of
during the evolution of birds from theropod dinosaurs.
changes occurring on geological time scales
Macroevolution is thought of as the compounded effects of microevolution. Thus, the distinction between micro- and macroevolution is not a fundamental one – the only difference between them is of
time and scale
How the process occurs.
It's evolution going on right now.
Microevolution has created a history, and the history also constrains the process.
evolution has many different scales
1. Principios básicos de evolución
2. Darwin + pruebas evolución
3. Historia Teoría sintética Evolución
4. Creacionismo/Diseño inteligente
5. Variabilidad genética
6. Selección neutral (deriva génica)
7. Selección natural (tipos, unidades, métodos)
8. Equilibrio Hardy-Weinberg
9. Fuerza de selección y respuesta evolutiva
11. Desarrollo (evo-devo)
12. Normas de reacción (variación, plasticidad)
13. Paisajes adaptativos
14. Selección Sexual
15. Spp y especiación
16. Teoría del juego
18. Equilibrio puntuado
20. Innovaciones evolutivas