![]() This is applied to all organisms (struggle for survival) Charles Lyell Discussed geological events-Laws of nature are constant over time. There are environmental factors that can affect the survival of organisms. Lamarck influence on the Evolutionary Theory First to recognize that species can change over time, also first to see link between environment and organisms' body structure Thomas Malthus People are born faster than people are dying- can lead to overcrowding if there are not limiting factors to keep population in check Thomas Malthus influence on the Evolutionary Theory Darwin saw this as a potential mechanism for evolution- some species survive and pass on their traits. First to use the term evolution (change over time) J. link between structure relates to function in organismsĤ. Organisms can change over their lifetimeĢ. Rocks change over time James Hutton influence on the Evolutionary Theory Earth has been around a lot longer than previously thought- gives enough time for evolution to take place J. Recognized connection between geological forces & geological features (valleys, mountains)Ģ. Act on individuals Evolution results in the changes of a _, not an individual, over millions of years. Mean adaptations have to be "perfect" to be passed onĤ. A lion will kill the slowest gazelle speed in the gazelle may be directly linked to the length of the leg or the size of the leg muscles, this is determined by the genes of that organism. A specific example of natural selection in living organisms. What does natural selection ACT on? It acts on phenotypes, not genotypes because nature selects who survives. Natural selection a process by which organisms that are most suited to their environment survive and reproduce most successfully also called survival of the fittest phylogeny the evolutionary history of a lineage using evolutionary relationships to classify organisms radiometric dating a method for determining the age of a sample from the amount of a radioactive isotope to the nonradioactive isotope of the same element in a sample relative dating a method of determining the age of a fossil by comparing its placement with that of fossils in other rock layers tetrapods vertebrate with four limbs transitional form organisms that show the intermediate states between an ancestral form and that of its descendants vestigial structure a structure that is inherited from ancestors but had lost much or all of its original function What does natural selection mean? Natural selection means individuals with adaptations most suited to the environment survive and reproduce most successfully. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |