_____________ selection favors organisms with phenotypes that are at one extreme relative to the average phenotype.
a) Disruptive
b) Stabilizing
c) Intermittent
d) Directional
e) Sexual
Ans: d) Directional
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Gram-stain morphologic features, motility, and flagellar placement are important identifying characteristics of:
a. Chryseobacterium. b. Flavobacterium. c. Pseudomonas. d. Bordetella.
All EXCEPT which of the following has an effect on
seed germination? a. moisture b. temperature c. carbon dioxide d. number of daylight hours e. oxygen
This hormone is used commercially to space out the flowers of grape vines by extending the internode lengths so the fruits have more room to grow and become larger.
A. ethylene B. abscisic acid C. gibberellin D. cytokinin E. auxin
Varicella and herpes zoster are caused by the same virus.
Answer the following statement true (T) or false (F)