<ul><li>1. Stabilizing </li></ul>Favors average individuals in the population Reduces variation of individuals in a population http://Muskopf, Shannan. Online Images. The Biology Corner . 13 May 2007. www.biologycorner.com/bio2/notes_chap16.html
<ul><li>Favors 1 extreme of individuals in the population </li></ul><ul><li>Those having the extreme trait survive and reproduce </li></ul><ul><li>Causes the population to move in one direction because more individuals have the trait </li></ul>Muskopf, Shannan. Online Images. The Biology Corner . 13 May 2007. http://www.biologycorner.com/bio2/notes_chap16.html
<ul><li>Favors either extreme of individuals in the population (unlike directional selection which favors one extreme ) </li></ul><ul><li>Those 2 extremes of the population survive and reproduce </li></ul><ul><li>Leads to no intermediate (average) form of the trait </li></ul><ul><li>Two new species evolve </li></ul>Online Images. Biofundamentals . 13 May 2007. http://virtuallaboratory.net/Biofundamentals/lectureNotes/Topic1F_Evo.htm
Muskopf, Shannan. Online Images. The Biology Corner . 13 May 2007. http://www.biologycorner.com/bio3/notes-chap17.html
Organisms from the same species develop different traits to survive their environment. Adaptive Radiation: This is a type of divergent evolution where a species evolves to fit into an open niche. http://www.biology-online.org/2/15_adaptive_radiation.htm
<ul><li>Causes of speciation: </li></ul><ul><ul><li>Behavioral Isolation: occurs when two species have different courtship behaviors (males have courtship songs or dances that will only be recognized by females of the same species) </li></ul></ul><ul><ul><li>Geographic Isolation – physical barrier (river, mountain) prevents contact between individuals and leads to speciation </li></ul></ul>
Spotted owl subspecies living in different geographic locations show some genetic and morphological differences. This observation is consistent with the idea that new species form through geographic isolation . http://evolution.berkeley.edu/evolibrary/article/_0_0/evo_45
These organism are not from the same species, and they are not related. They developed similar adaptations because they have the same niche. They all eat ants. http://www.pbs.org/wgbh/evolution/library/01/4/l_014_01.html
Yucca flowers are a certain shape so that only the yucca moths can pollinate them. http://biology.clc.uc.edu/Courses/Bio303/coevolution.htm
A particular slide catching your eye?
Clipping is a handy way to collect important slides you want to go back to later.