The shape, size, or color of an animal
A) plays a role in active visual communication.
B) relates to the pheromones the animal produces.
C) does not communicate information.
D) plays a role in passive visual communication.
E) is used to mark the boundaries of territories.
D
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The circulatory systems of bony fishes, rays, and sharks are most similar to _____
A) those of birds, with a four-chambered heart B) the portal systems of mammals, where two capillary beds occur sequentially, without passage of blood through a pumping chamber C) those of reptiles, with one pumping chamber driving blood flow to a gas-exchange organ, and a different pumping chamber driving blood to the rest of the circulation D) those of sponges, where gas exchange in all cells occurs directly with the external environment E) those of humans, where there are four pumping chambers to drive blood flow
While examining the sequence of nucleotides in the replicon region of bacterial DNA, you note an abundance of adenine and thymine base pairs. This leads you to conclude that this particular section of the DNA must be the
A. oriC site. B. ter site. C. Shine-Delgarno sequence. D. Pribnow box.
_________ make it possible for researchers to study how an entire genome responds to an environmental stimulus
A. Bioinformatics B. PCR reactions C. DNA microarrays D. The BLAST program
The very young and the elderly are more susceptible to infectious disease
Indicate whether this statement is true or false.