In ____, the gray crescent establishes the ____ axis of the body
a. birds; dorsal-ventral
b. frogs; dorsal-ventral
c. humans; dorsal-ventral
d. birds; anterior-posterior
e. sea urchin; anterior-posterior
ANSWER: b
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What was the researchers' conclusion in the "ant plant" studies?
A. Nectar attracts herbivores and prevents them from eating the leaves. B. Tramp ants eat the leaves of plants with domatia. C. Any ants that occupy domatia protect the trees from herbivores. D. Herbivores are more likely to eat the leaves of plants with domatia. E. Tramp ants that occupy domatia protect the trees from herbivores.
The coccyx is classified as a(n) ________ structure because it no longer has a function
Fill in the blank(s) with correct word
Which of the following statements is true of Q fever?
A) For many years its cause was questionable B) It was first described in 1976 during an outbreak in Quincy, Massachusetts C) Researchers found it could be effectively treated with quinine D) The sharp spikes of fever on patients' temperature charts resemble porcupine quills
What is the equilibrium value of F for a population of constant size Ne = 5,000 that ex-periences a mutation rate of 0.00005?
a. 0 b. 0.15 c. 0.30 d. 0.50 e. None of the above