In 1970 Stanier proposed that classification be based on
A. evolution.
B. Gram stain.
C. physiology.
D. DNA sequence.
D
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Karyo types generally remain constant within a species because
A) rearrangements occur frequently. B) changes in chromosome number occur infrequently. C) genetic instabilities produced by genomic changes are usually at a selective disadvantage. D) genetic imbalances are often at a selective advantage.
The cuticle
a. conserves water. b. reduces absorption of carbon dioxide by the plant. c. relegates transpiration to the stomata. d. helps prevent wilting. e. does all of these.
In cladistics, ________ is(are) the primary criterion used to classify organisms.
A. observable traits B. shared, derived traits C. mating behavior D. ecological niche E. All of the answer choices are correct.
Constructions of bones and teeth, blood clotting, muscle contraction, nerve contraction
What will be an ideal response?