Approximately what percentage of the human genome encodes proteins?
a. 1
b. 3
c. 5
d. 15
e. 50
a
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To read the hemolytic reaction accurately on a blood agar plate, the technologist must:
a. hold the plate up to the light, and observe the plate with the light coming from be-hind. b. hold the plate under the light, and observe the plate with the light coming from the top. c. hold the plate over a white background. d. examine the plate using reflected and transmitted light.
Gene-splicing procedures may be performed with small loops of bacterial DNA that are not part of the main chromosome. These small DNA loops are called
A. nucleotides. B. plasmids. C. translators. D. anticodons.
Since chemoreceptors are found in arthropods, crustaceans, vertebrates and all other animals it is believed that chemoreception is the most primitive sense.
Answer the following statement true (T) or false (F)
The concept that most morphological changes in species occur gradually over long periods of time is known as the
____.
a. phyletic gradualism hypothesis b. principle of convergent evolution c. punctuated equilibrium hypothesis d. unified theory of evolution e. concept of adaptive radiation