Consider the cladogram shown. Which pair of species shares the greatest number of derived characters (synapomorphies)?
A. 4 and 2
B. 5 and 4
C. 6 and 1
D. 6 and 2
E. 5 and 2
C. 6 and 1
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All of the following statements about a blastocyst are true EXCEPT
a. develops about 5 days after fertilization. b. still surrounded by the zona pellucida. c. comprised of blastomeres reorganized around the blastocyst cavity. d. still about the size of the original zygote. e. organized as embryoblast and trophoblast.
A phragmoplast functions to:
A. stimulate the growth of the microtubule spindle. B. anchor microtubules to sister chromatids. C. breakdown the nuclear envelope. D. form a new cell wall.
A new flower species has a unique photosynthetic pigment. The leaves of this plant appear to be blue-green. What wavelengths of visible light does this pigment reflect?
A. red and yellow B. blue and violet C. green and blue D. red, yellow, and green E. green, red, and violet
In an experiment, the development of the parietal lobe of a rat was inhibited. Predict the most likely consequence of
this procedure.
a. The rat was not able to make noises. b. The rat was unable to move. c. The rat was unable to detect touch. d. The rat was not able to process visual input. e. The rat could not right itself.