Which best describes a population that forms a new species within the same geographical region as the original
species?
a. allopatric speciation
b. sympatric speciation
c. parapatric speciation
d. autologous speciation
e. heterogeneous speciation
b
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Which of the following processes will occur in the presence or absence of oxygen?
A. glycolysis B. electron transport chain C. oxidative phosphorylation D. cellular respiration E. citric acid cycle
Which of the following is a unique characteristic of oysters and mussels?
a. secreting nacre around foreign particles b. having tusk shells buried in the sand c. using beak-like jaws to catch prey d. living inside multi-chambered shells
Western blotting is an immunological test used to identify the antigens in an individual suspected of having Lyme disease.
a. true b. false
Fire and Mello studied the effect of RNAs made from plasmids on gene expression in the nematode C. elegans. The results from the two experimental treatments and the control are shown below. What can be concluded from these results?
A. The labeled probe detects RNAs other than mex-3. B. Double-stranded RNA degrades more mex-3 mRNA than antisense RNA. C. The injection procedure results in degradation of all mex-3 mRNA. D. Antisense RNA degrades more mex-3 mRNA than double-stranded RNA.