BIO 200 Lecture Notes - Lecture 9: Gene Flow, Adaptive Radiation, Disruptive Selection
9 Jun 2015
School
Department
Course
Professor
Document Summary
No one can mistake squirrel and a barn swallow. Or tree swallow and barn swallow, even though they"re closely related, and similar. Basic view on how we define different species by observing visible anatomical characteristics that differ between groups of organisms. And this is how linnaeus defined species in his theory, referred to this sort of classifican based on anatomical differences as more physically observable traits. Sometimes we can"t differentiate between two species just by looking like downey and hairy woodpeckers. Closer inspection and mating call, testing chemical instructions, and. Dna analysis visible or nonvisible we would find differences between them. Even if we have trouble differentiating these species the individuals involved don"t. Ernst came up with the biological species concept defines species as groups of actual intro breeding national breeding which is isolated. A species is composed of populations who"s members mate and produce offspring or they would if they came in contact.
