Equivalent segments of DNA are exchanged between chromosomes as a result of
A. segregation.
B. crossing-over.
C. fertilization.
D. independent assortment.
B. crossing-over.
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The organelle involved in the oxygen-requiring process by which the energy harvested from macromolecules is used to generate ATP is the:
A. chloroplasts. B. ER. C. nucleus. D. lysosome. E. mitochondria.
If the genus Quercus (oaks) is monophyletic, then this means that all species of oaks
A. grow in similar habitats. B. are morphologically very similar. C. are descended from a common ancestor. D. cannot be classified in a single family or order. E. have undergone horizontal gene transfer sometime in their evolutionary history.
The most abundant class of antibody in the body, what antibody can function by neutralization, agglutination, opsonization, complement activation, and enhancement of natural killer cell activity?
A) IgM B) IgE C) IgG D) IgD E) IgA
Exchange of genetic material in ciliates is known as
A. conjugation B. panmixis C. macronucleosis D. myxomycetosis E. micronucleosis