The hundreds of species of Drosophila in Hawaii exhibit different mating rituals. This isolating mechanism is
A. prezygotic and temporal.
B. prezygotic and behavioral.
C. prezygotic and geographical.
D. prezygotic and ecological.
E. postzygotic and mechanical.
Answer: B
You might also like to view...
While walking a cornfield, you notice roots emerging from the corn stalks themselves, and you suspect that these roots are helping to hold the plants upright. These roots belong to a category of roots known as
A) Taproots B) Fibrous roots C) Adventitious roots D) Root hairs E) Special roots
Inflammation of the mucous membranes of the sinuses is called ________
A) asthma B) sinusitis C) respiratory distress syndrome D) laryngitis
The stem axis of the embryo below the cotyledons in some seedlings.
Choose the LETTER of the best match: A. hypocotyl B. endosperm C. scutellum D. radicle E. epicotyl
Parasitoids reduce the host population by ________
a. having their larvae steal the host's nutrients and eventually killing the host during larval development b. outcompeting the host population for breeding sites and eventually killing the host during larval development c. killing the host's offspring and outcompeting the host population for breeding sites d. having larvae steal the host's nutrients and making the host sterile e. having the larvae steal the host's nutrients and killing the host's offspring