EvolutionPrinciples160-page5

EvolutionPrinciples160-page5 - adaptations o Those...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Principles of Evolution - 5 Variation in Galapagos Finch Beak Share Variation in Mollusk Color Patterns The theory of Natural Selection was developed to explain adaptations and variations of organisms to their environment based on biological explorations, from the evolutionary evidences of the fossil record, and from anatomical studies. The major statements of this theory are: Variations exist among individuals of a species. Some of these variations are inherited (genetic). Species produce more offspring than can survive. Survival depends on ability to compete for food and resources. The individuals genetically better adapted to the surroundings survive and reproduce more offspring (therefore passing on the better suited
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: adaptations). o Those individuals having less favorable traits produce fewer offspring, so that less successful adaptations are not passed on as frequently. o This phenomenon is called differential reproduction and successive generations have more individuals with more favorable traits (genetically better adapted to their surroundings). o In natural selection, inherited traits that are adaptive (favorable) will become more frequent in the population at the expense of less adapted traits, which will appear less frequently in passing generations. Populations will change through time in response to environmental factors....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern