chapter 24 - Speciation Is the process...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon Speciation Is the process by which daughter species evolve from parent species Key concept Species consist of one or more populations of individuals that can interbreed and produce offspring o Biological species concept: (based on sexual reproduction) Limitations: Asexual organisms (no information about asexual) Fossils (died LONG time ago, cannot make new babies) Organisms about which little is known regarding their reproduction o Morphological species concept Characterizes a species in terms of body shape, size, structural function Very useful in biological science o Paleontological species concept Focuses on morphologically discrete species known only from the fossil record Maybe not all fossils found an animal, they can guess or predit from the fossils o Ecological species concept Views a species in terms of its ecological niche How species use their natural resources o Phylogenetic species concept Defines a species as a set of organisms with a unique genetic history Computer can determine the species with equipment Populations of a species have a shared genetic history – common ancestor o All humans are from the same species Geographic barriers can start the process of speciation o Allopatric speciation Occupy more area, most common speciation Barrier prevent gene flow
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

chapter 24 - Speciation Is the process...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online