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Selección natural

Grade Level(s):

  • 9-12
  • General

Source:

  • UC Museum of Paleontology

Resource type:

  • Tutorial

Time: 30-40 minutes

Overview

La idea más famosa de Darwin, “La selección Natural”, explica la gran diversidad de la vida. Aprende cómo funciona, explora algunos ejemplos, y descubre cómo evitar falsas ideas.
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] Natural selection acts on the variation that exists in a population. (LS4.B, LS4.C)
  • [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] Traits that confer an advantage may persist in the population and are called adaptations. (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.
  • Disciplinary Core Idea LS4.B: Natural Selection
  • Disciplinary Core Idea LS4.C: Adaptation

This tutorial provides basic information on how natural selection works and would make an excellent introductory reading for further investigations of natural selection at work.