Join us as we explore the fascinating transition from early cells to multi-celled animals. This transition, as well as several other major evolutionary transitions, dramatically increased the complexity of lifeforms on our planet.
If you enjoyed the show, please consider supporting us at patreon.com/statedclearly
to see the animation on bees, go here: https://www.youtube.com/watch?v=J83qyLXAsN4
------------SOURCES------------
OVERVIEW OF MAJOR TRANSITIONS
This animation was based on a paper by Stuart West et al called Major Evolutionary Transitions in Individuality which can be accessed free here: http://www.pnas.org/content/112/33/10112.full.pdf
Dr West's paper defines major transitions in a slightly narrower way than earlier workers on the subject. For a broader definition see the book by John Maynard Smith and Eörs Szathmáry on the topic: https://en.wikipedia.org/wiki/The_Major_Transitions_in_Evolution
MITOCHONDRIA
The paper by Dr Margulis (Sagan) on the origin of mitochondria. Note that in it she presents several ideas cautiously as hypothesis. While some aspects of the paper are now known to be incorrect, she was spot on about the origin of mitochondria: http://web.gps.caltech.edu/classes/ge246/endosymbiotictheory_marguli.pdf
VIROIDS
The free living genes discovered by Dr Diener were made of RNA. Here is a paper on them: http://www.sciencedirect.com/science/article/pii/0042682271903424
Here is an excellent Wikipedia article on them I suggest looking over first. It includes a schematic of the species Diener found: https://en.wikipedia.org/wiki/Viroid
EXPERIMENTS SHOWN IN THIS ANIMATION
Phagotrophy by a flagellate selects for colonial prey: A possible origin of multicellularity: http://link.springer.com/article/10.1023/A:1006527528063
Experimental evolution of multicellularity:
http://www.pnas.org/content/109/5/1595
Auto-/heterotrophic endosymbiosis evolves in a mature stage of ecosystem development in a microcosm composed of an alga, a bacterium and a ciliate [what a catchy title!]: https://www.ncbi.nlm.nih.gov/pubmed/19162125
If you enjoyed the show, please consider supporting us at patreon.com/statedclearly
to see the animation on bees, go here: https://www.youtube.com/watch?v=J83qyLXAsN4
------------SOURCES------------
OVERVIEW OF MAJOR TRANSITIONS
This animation was based on a paper by Stuart West et al called Major Evolutionary Transitions in Individuality which can be accessed free here: http://www.pnas.org/content/112/33/10112.full.pdf
Dr West's paper defines major transitions in a slightly narrower way than earlier workers on the subject. For a broader definition see the book by John Maynard Smith and Eörs Szathmáry on the topic: https://en.wikipedia.org/wiki/The_Major_Transitions_in_Evolution
MITOCHONDRIA
The paper by Dr Margulis (Sagan) on the origin of mitochondria. Note that in it she presents several ideas cautiously as hypothesis. While some aspects of the paper are now known to be incorrect, she was spot on about the origin of mitochondria: http://web.gps.caltech.edu/classes/ge246/endosymbiotictheory_marguli.pdf
VIROIDS
The free living genes discovered by Dr Diener were made of RNA. Here is a paper on them: http://www.sciencedirect.com/science/article/pii/0042682271903424
Here is an excellent Wikipedia article on them I suggest looking over first. It includes a schematic of the species Diener found: https://en.wikipedia.org/wiki/Viroid
EXPERIMENTS SHOWN IN THIS ANIMATION
Phagotrophy by a flagellate selects for colonial prey: A possible origin of multicellularity: http://link.springer.com/article/10.1023/A:1006527528063
Experimental evolution of multicellularity:
http://www.pnas.org/content/109/5/1595
Auto-/heterotrophic endosymbiosis evolves in a mature stage of ecosystem development in a microcosm composed of an alga, a bacterium and a ciliate [what a catchy title!]: https://www.ncbi.nlm.nih.gov/pubmed/19162125
Año publicación: 2019
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What caused life's major evolutionary transitions?
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Ciencias Naturales
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Biología
OA
Objetivo de aprendizaje CN1M OA 03
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Objetivos de aprendizaje del recurso
Objetivo de aprendizaje CN1M OA 03 CN1M OA 03
Explicar, basándose en evidencias, que la clasificación de la diversidad de organismos se construye a través del tiempo sobre la base de criterios taxonómicos que permiten organizarlos en grupos y subgrupos, identificando sus relaciones de parentesco con ancestros comunes.
