What forms a long bone's shaft and the outer part of its two ends?
a. spongy bone
b. periosteum
c. osteons
d. osteoblasts
e. compact bone
E
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Four of the five answers listed below are related by a common gender. Select the exception
a. Barr body b. Y chromosome c. dosage compensation d. XIST gene e. X inactivation
A taste bud is indicated by
a. A. b. B. c. C. d. A and B. e. none of these; they are olfactory receptors
The results in the accompanying figure support the conclusion that:
a. natural selection does not occur in guppies.
b. natural selection can occur in guppies within a few generations.
c. predation is not a selective force in determining the average size of guppies.
d. male body weight increased proportionately more than female body weight.
e. in the experimental setting, the guppies produced fewer, larger offspring.
The _____ are organs that physically separate surplus or waste substances in the blood from the needed substances.
Fill in the blank(s) with the appropriate word(s).