Males and females often differ in their reproductive strategies due to the fact that males can increase the number of
offspring they produce by ____ while females reproduce most successfully by ____.
a. mating with a high-quality female; mating with a high-quality male
b. driving off other males; defending a productive territory
c. defending a productive territory; enlisting multiple males to aid in raising her offspring
d. mating with multiple females; mating with a high-quality male
e. mating with multiple females; mating with multiple males
ANSWER: d
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A research laboratory is attempting to collect the content of human red blood cells. The type of solution researchers should use to cause blood cells to lyse (burst) would be
A. hyperosmotic. B. isosmotic. C. hypoosmotic. D. osmotic.
Speciation occurs ____
a. after populations become reproductively isolated b. when mutations generate observable differences c. when transitional forms develop between different populations d. when natural selection pressures reach their maximum e. randomly as mutations build up in a population
Reticular fibers are the most numerous type of fiber comprising connective tissue
____________________ Indicate whether the statement is true or false.
Foreign genes can be inserted into a single plant cell that is then cultured to produce
A) a genetically modified plant. B) genetically modified seeds. C) a new plant species. D) clones of the organisms from which the genes were taken.