Which of these is the best description of a dominant allele?
a. it is the allele that is expressed
b. it is the most common allele
c. it is the best allele
d. both b and c
Answer: a. it is the allele that is expressed
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Molecular paleontology _____
A. studies the morphology of extinct species B. studies the DNA of extinct species C. cannot use rRNA
According to kin selection, a man should die to save the life of
A. one brother. B. one or more brothers. C. two or more cousins. D. four or more cousins. E. eight or more cousins.
If a ray-finned fish is to both hover (remain stationary) in the water column and ventilate its gills effectively, then what other structure besides its swim bladder will it use?
A) its pectoral fins B) its lateral line system C) its caudal (tail) fin D) its opercula
Massive _____ changes have occurred over time as a result of continental drift, leading in many cases to mass extinction of various species.
What will be an ideal response?