Some viruses can carry their genes as ________.
A. DNA
B. RNA
C. protein
D. two of the above
E. all of the above
Answer: E. all of the above
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In vascular plants, water and dissolved minerals are transported from roots to the stems and leaves by ____
a. sclerenchyma b. phloem c. collenchyma d. parenchyma e. xylem
Parapodia are characteristic of oligochaetes. Indicate whether the statement is true or false
The biological species concept declares an organism to be a separate species if it has undergone evolution long
enough for the emergence of statistically unique traits. _____________ Indicate whether the statement is true or false.
Which of the following activities could lead to a decrease in the genetic diversity in the gene pool of a species?
A. an increase in the reproductive rate, which results in increased population size B. a decrease in the size of the population from millions to hundreds C. the absence of mutations D. the species switches from asexual reproduction to sexual reproduction