The process in which related DNA sequences from two different sources are exchanged is called
A) transduction.
B) phage conversion.
C) reversion.
D) homologous recombination.
Answer: D
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The bacterium Escherichia coli comprises a significant fraction of the bacterial population in healthy adult humans, ranging from 10-50%
Indicate whether the statement is true or false.
Morphology refers to the ____ of an organism
a. reproductive ability b. appearance c. habitat d. lifespan e. movement
Most often, the largest gradient in water potential is between
A. xylem and phloem. B. leaf cells and the intracellular spaces inside the leaves. C. the relative humidity inside the leaf and the relative humidity outside the plant. D. roots and soil water. E. root xylem and shoot xylem.
A higher concentration of solutes corresponds to a (higher/lower) concentration of water in a given solution.
Fill in the blank(s) with the appropriate word(s).