In the absence of competition from other males:
a. Female chickens mated more often with the male present.
b. The quantity of sperm a male used to inseminate a female decreased.
c. Once a male has inseminated a female, additional sperm may do little to increase the probabil-ity of fertilization.
d. Both B and C
D
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The defense response against a mismatched transfusion is called ____
a. precipitation b. immunization c. agglutination d. ABO typing e. transfusion allergy
The processes of chemical cycling would be studied mainly by ________
A) an environmentalist B) a community ecologist C) a population ecologist D) an ecosystem ecologist
The five-toed limb of stem reptiles was modified into a limb suitable for digging. This is an example of ____.
A. convergent evolution B. morphological divergence C. analogous evolution D. morphological convergence E. distal modification
"Ontogeny recapitulates phylogeny" is a statement describing:
A. ultimate causes of the developmental changes in organism B. proximate causes of the developmental changes in organism