Which of the following would be transcribed into mRNA?
A. a promoter
B. a ribozyme
C. a noncoding gene
D. a protein-coding gene
Answer: D
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Mutations that confer no apparent selective advantage or disadvantage in a particular environment are
said to be selectively
a. random. b. deleterious. c. neutral. d. benign. e. stabilizing.
The Solenopsis invicta (the red imported fire ant) has had an impact in four of the following areas. Which one is the
exception? a. They decrease the native ant population. b. They provide food for many bird species. c. They decrease ground bird populations. d. They decrease the native plant population. e. They threaten the survival of the Texas horned lizard.
What is the study of the genetic variability within a population and the forces that change allele frequencies?
a. evolution b. allele genetics c. variable ecology d. population genetics e. evolutionary genetics
Taq polymerase is a DNA polymerase enzyme that demonstrates maximal activity at 72oC. The organism from which this enzyme was isolated would most likely be classified as a:
psychrotroph psychrophile mesophile thermophile hyperthermophile