Evolution Project by Cadence Balsz https://padlet.com/cadence_balsz/amp3an0y48i Biology project en-us 2018-05-09 21:20:04 UTC 2018-05-14 20:55:16 UTC hello@padlet.com Natural Selection cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259462358 the process where organisms better adapted to their environment survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.]]> 2018-05-09 21:30:12 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259462358 Mutation cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259462810 the changing of the structure of a gene, resulting in a variant form that may be given to generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.]]> 2018-05-09 21:32:29 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259462810 Migration/ Gene Flow cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259463696 is any movement of individuals, and/or the genetic material they carry, from one population to another. Gene flow includes lots of different kinds of events, such as pollen being blown to a new destination or people moving to new cities or countries

]]> 2018-05-09 21:37:29 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259463696 Divergent,parallel and convergent Evolution cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259465341  Divergent:moving or extending in different directions from a common point

parallel:evolution refers to the evolutionary process wherein two or more species in the same environment develop similar adaptation or characteristics


]]> 2018-05-09 21:47:18 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259465341 Sexual Selection cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259465739 natural selection arising through preference by one sex for certain characteristics in individuals of the other sex.]]> 2018-05-09 21:50:00 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259465739 Genetic Drift cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466002 variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.]]> 2018-05-09 21:51:57 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466002 Homologous Structures cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466172 is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor.]]> 2018-05-09 21:53:16 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466172 Vestigial organs cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466330 are often homologous to structures that are functioning normally in other species.]]> 2018-05-09 21:54:42 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466330 Ontogeny Recapitulates Phylogeny cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466629 to mean that the development of an organism ontogeny expresses all the intermediate forms of its ancestors throughout evolution phylogeny.]]> 2018-05-09 21:57:15 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466629 molecular evolution cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466976  is the process of change in the sequence composition of cellular molecules such as DNA, RNA, and proteins across generations. ]]> 2018-05-09 22:00:08 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259466976 Vist cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/259468121 variation, Inheritance,selection, and time.
Variation:any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation)

Inheritance:The acquisition of traits genetically transmitted from parents to offspring.

Selection:the preferential survival and reproduction or preferential elimination of individuals with certain genotypes (genetic compositions), by means of natural or artificial controlling factors.

Time:a daily cycle of activity observed in many living organisms.]]> 2018-05-09 22:10:52 UTC https://padlet.com/cadence_balsz/amp3an0y48i/wish/259468121 5 Major Extinctions cadence_balsz https://padlet.com/cadence_balsz/amp3an0y48i/wish/260086156 Ordovician-Silurian mass extinction:The third largest extinction in Earth's history, the Ordovician-Silurian mass extinction had two peak dying times separated by hundreds of thousands of years. During the Ordovician, most life was in the sea, so it was sea creatures such as trilobites, brachiopods and graptolites that were drastically reduced in number.

Late Devonian mass extinction:Three quarters of all species on Earth died out in the Late Devonian mass extinction, though it may have been a series of extinctions over several million years, rather than a single event. Life in the shallow seas were the worst affected, and reefs took a hammering, not returning to their former glory until new types of coral evolved over 100 million years later.



Permian mass extinction:The Permian mass extinction has been nicknamed The Great Dying, since a staggering 96% of species died out. All life on Earth today is descended from the 4% of species that survived.


Triassic-Jurassic mass extinction:During the final 18 million years of the Triassic period, there were two or three phases of extinction whose combined effects created the Triassic-Jurassic mass extinction event. Climate change, flood basalt eruptions and an asteroid impact have all been blamed for this loss of life.

Cretaceous-Tertiary mass extinction:The Cretaceous-Tertiary mass extinction - also known as the K/T extinction - is famed for the death of the dinosaurs. However, many other organisms perished at the end of the Cretaceous including the ammonites, many flowering plants and the last of the pterosaurs.
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