What is often true of the fruits eaten by birds and mammals?
A. defensive mutualism.
B. monophagy.
C. high number of parasites.
D. attractive colors.
E. amensalism.
D. attractive colors.
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During the initiation of nitrogen-fixation nodules, the Rhizobium bacteria release what type of molecules to signal the host plant?
A. sugars B. proteins C. transcription factors D. flavonoids E. Nod factors
What is an asteroid?
a. dust and small rock orbiting around the sun b. a ball of ice with a tail c. a small planet d. a small sun with weak solar emissions e. debris from a large planet
The cycle of viral infection in which the viral DNA is integrated into the host's DNA is called the ________ cycle.
A. lytic B. lysogenic C. lysozyme D. retroviral
Generally, it is not possible to determine whether nondisjunction failed to occur in oogenesis or spermatogenesis. However, it is possible to assert that XYY results from nondisjunction during
A) oogenesis. B) spermatogenesis. C) mitosis. D) cytokinesis.