Modern Evolution .docx - The Tree of Life 1 Evolution(the...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
The Tree of Life 1. Evolution (the process) a. Phylogeny (pattern reflecting process) b. Taxonomy (classification of pattern) c. Nomenclature (rules for naming) 2. Evolution of Life a. Phyletic evolution change in the phenotype of a population/species b. Speciation the production of a new species, either through the gradual transformation or the splitting/branching/divergence of an existing species into two or more species c. Extinction the loss of a species due to the deaths of its members 3. Two ways species can form a. Anagenesis gradualism b. Cladogenesis one species producing two new species i. one is more linear and the other is branching How do we compile data and what is our unit of comparison? What is a species? 1. Biological 2. Recognition 3. Ecological 4. Evolutionary 5. Morphological Ernst Mayr most important biologist of 20 th century Systematics and the Origin of Species 1. Evolutionary biologist 2. “Darwin of the 20 th century 3. biological species concept a. he is synchronic – thinking of things happening today Biological Species Concept - species are groups of interbreeding natural populations that are reproductively isolated from other such groups o Erns Mayr Mendelian population a group of organisms such that each member is more likely to mate with another than with an outsider Gene pool the combined genes of a Mendelian population from which are drawn the genotypes of individual population members Deme smallest Mendelian population, one that is not divisible into smaller populations
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Recognition Species Concept - Individuals identify members of their species for purposes of mating (avoidance of mating with non-members) - Emphasis on ‘selective mating’ -
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the 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