In a population, the allele frequency for red flower color remained at 0.7 and the allele frequency for white flower remained at 0.3 for six generations. This ________ an example of a Hardy-Weinberg equilibrium in that ________.
A. is; evolution occurred
B. is not; evolution occurred
C. is not; evolution did not occur
D. is; evolution did not occur
Answer: D
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Antibiotic therapy is not significantly useful for treating typhoid fever
Indicate whether the statement is true or false.
Why is Taq polymerase used in a polymerase chain reaction (PCR)?
A. Taq polymerase has proofreading activity and thus makes fewer errors than other DNA polymerases. B. Unlike other DNA polymerases, Taq polymerase is heat stable and survives the 94 degree denaturation step in PCR. C. Unlike other DNA polymerases, Taq polymerase is not inhibited by dideoxy nucleotides. D. Taq polymerase can produce DNA from an RNA template, unlike other DNA polymerases. E. Taq polymerase is more efficient than other DNA polymerases.
The net difference in electrical charge inside compared with outside the neuron____
Fill in the blank(s) with the appropriate word(s).
The term that describes a tissue lacking oxygen is ____
a. hypoxic b. hyperemia c. hyperbaric d. hypercapnia e. hyperventilate