In the process of biological evolution, new species may evolve through exchange of genes from one species to another. This process is called
A. proteome transfer.
B. vertical descent with mutation.
C. genomic sciences.
D. horizontal gene transfer.
E. vertical evolution.
Answer: D
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An australopith is a(n) _____
a. craniate d. amniote b. vertebrate e. placental mammal c. hominoid f. all of these
If you placed an electrode on a person's triceps and stimulated the muscle daily over several weeks, which of the following would occur?
A. That person would not be able to straighten their leg, and the muscle would grow. B. That person would not be able to straighten their arm, and the muscle would degenerate. C. That person would not be able to bend their leg, and the muscle would grow. D. That person would have difficulty bending their arm, and the muscle would grow. E. That person would have difficulty bending their arm, and the muscle would degenerate.
Density-independent factors that limit population growth include ____
a. parasites b. temperature c. disease d. competition e. predation
In bacterial cells, the concentration of cAMP is _______ correlated with the sugar _______.
A: negatively: glucose B: positively; maltose C: positively; lactose D: positively; glucose E: negatively; lactose