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Home → Teach Evolution → Lessons and Teaching Tools → Teaching Resources Database → Mecanismos: Los procesos de la evolución

Mecanismos: Los procesos de la evolución

Grade Level(s):

  • 9-12
  • General

Source:

  • UC Museum of Paleontology

Resource type:

  • Tutorial

Time: Varies

Overview

Aprende sobre los procesos básicos que han moldeado la vida y producido su asombrosa diversidad.
Este artículo se encuentra en Evolución 101.

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  • [Evidence of evolution: Grades 9-12] There is a fit between organisms and their environments, though not always a perfect fit. (LS4.C)
  • [Mechanisms of evolution: Grades 9-12] Evolution results from selection acting upon genetic variation within a population. (LS4.B)
  • [Mechanisms of evolution: Grades 9-12] Evolution results from genetic drift acting upon genetic variation within a population.
  • [Mechanisms of evolution: Grades 9-12] There is variation within a population. (LS3.B)
  • [Mechanisms of evolution: Grades 9-12] Natural selection acts on the variation that exists in a population. (LS4.B, LS4.C)
  • [Mechanisms of evolution: Grades 9-12] New heritable traits can result from recombinations of existing genes or from genetic mutations in reproductive cells. (LS3.B)
  • [Mechanisms of evolution: Grades 9-12] Mutations are random.
  • [Mechanisms of evolution: Grades 9-12] Organisms cannot intentionally produce adaptive mutations in response to environmental influences.
  • [Mechanisms of evolution: Grades 9-12] Inherited characteristics affect the likelihood of an organism's survival and reproduction. (LS4.B, LS4.C)
  • [Mechanisms of evolution: Grades 9-12] Populations, not individuals, evolve.
  • [Mechanisms of evolution: Grades 9-12] Traits that confer an advantage may persist in the population and are called adaptations. (LS4.B, LS4.C)
  • [Mechanisms of evolution: Grades 9-12] Over time, the proportion of individuals with advantageous characteristics may increase due to their likelihood of surviving and reproducing. (LS4.B, LS4.C)
  • [Mechanisms of evolution: Grades 9-12] Fitness is reproductive success — the number of viable offspring produced by an individual in comparison to other individuals in a population/species.
  • [Mechanisms of evolution: Grades 9-12] Random factors can affect the survival of individuals and of populations.
  • Disciplinary Core Idea LS3.B: Variation of Traits
  • Disciplinary Core Idea LS4.B: Natural Selection
  • Disciplinary Core Idea LS4.C: Adaptation

This resource includes a lot of material divided into different sections. You might decide to use just a few of them. The resource provides basic, instructional information on how evolution works and would make good background reading for some of the more advanced articles listed in this database. Classroom activities and discussion could supplement material provided in this resource.