Sunday, January 22, 2012

Isolating mechniams..?

Classify each from following.





a. temporal b. behavioral c. mechnical d. gametic mortality e. ecological f. postzygotic





1.) sterile zebroids


2.) Two sage species; each has its flower petals arranged as a "landing platform" for a different pollinator


3.) Two species of cicada; one matures, emerges, and reproduces every 13 years, the other every 17 years


4.) Populations of the manzanita shrub Arctostaphylos patula and A. viscida demonstate differing tolerances to water stress at varying distances from water sources


5.) Prior to copulation, male and female birds engage in complex courtship recognized by own species


6.) Sterile mules

Isolating mechniams..?
1. postzygotic





2. mechanical





3. temporal





4. ecological





5. behavioral





6. postzygotic


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