Became the &quot;Darwin&#146;s Bulldog&quot;, the fierce proponent of evolution by natural selection in the public forum Evolution by Natural Selection Offspring produced faster than food supply increases All living organisms vary (especially within species) Because more individuals are born than survive, there is a struggle for existence individuals with favorable adaptations are most likely to survive and leave offspring, sometimes known as survival of the fittest As a result, individuals with favorable adaptations increase in relative number from generation to generation, so greater and greater numbers within the species have the adaptation Over long periods of time, such successful variations (favorable adaptations) produce differences that result in the formation of new species Darwin's Evidence Changes bred into domesticated organisms, especially pigeons Geographic distributions of species such as the turtles of the Galapagos Islands The geological and paleontological record Comparative anatomy (e.g. the resemblance between apes and man) and embryology (e.g., the possession of gills by mammalian embryos) Darwin's Failures Never understood the source of the variation that is so key for the operation of natural selection Never understood the particulate nature of inheritance, in spite of having a reprint of Mendel&#146;s 1865 publication Darwin's view of how speciation occurs, circa 1870 Variation between individuals occurs in all species and is caused by the variability of the environment to which a population is exposed.
(the fierce proponent of evolution by natural selection in the public forum; produced faster; s 1865 publication Darwin's view of how speciation occurs) (circa 1870 Variation between individuals; occurs; L:in all species) Context(circa 1870 Variation between individuals occurs,List([1404, 1451))):(individuals with favorable adaptations; increase; in relative number; T:from generation to generation) (Darwin's Evidence Changes; bred; into domesticated organisms) (food supply; increases; All living organisms vary (especially within species) (the possession of gills by mammalian embryos; Never understood; the particulate nature of inheritance; T:The geological and paleontological record Comparative anatomy) (circa 1870 Variation between individuals; is caused; by the variability of the environment) (the variation; is; so key for the operation of natural selection) (a population; is exposed; ) (speciation; occurs; ) (more individuals; are born; )
circa 1870 Variation between individuals occurs,List([1404, 1451))
the fierce proponent of evolution by natural selection in the public forum circa 1870 Variation between individuals individuals with favorable adaptations Darwin's Evidence Changes food supply the possession of gills by mammalian embryos circa 1870 Variation between individuals the variation a population speciation more individuals
produced faster occurs increase bred increases Never understood is caused is is exposed occurs are born
s 1865 publication Darwin's view of how speciation occurs
L:in all species
in relative number T:from generation to generation
into domesticated organisms
All living organisms vary (especially within species
the particulate nature of inheritance T:The geological and paleontological record Comparative anatomy
by the variability of the environment
so key for the operation of natural selection