Both extremes of an array of phenotypes are favored in _____ .
A. directional selection
B. genetic drift
C. gene flow
D. disruptive selection
E. stabilizing selection
D. disruptive selection
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Photosynthesis and cellular respiration are examples of ____
a. catabolism b. cleavage c. anabolism d. synthesis e. metabolism
Name and briefly characterize the four classes of fishes. Indicate which class is considered to be most similar to the ancestral chordate and which is the ancestor of the land vertebrates, justifying your choices
What will be an ideal response?
Which of the following represents an early
stage in primary succession? a. pine trees b. moss and lichens on bare rock c. weedy annual plants in an open field d. climax species in succession e. alder, cottonwood, and willow thickets
A transfer RNA (tRNA) carries
a. the mRNA transcript to the ribosome b. the proper amino acid to the ribosome c. the stop codon to the ribosome d. RNA polymerase to the ribosome