Based on the data in the figure, a likely reason for speciation between these two sympatric species of
frogs is:
a. allopolyploidy.
b. mechanical isolation.
c. habitat isolation.
d. temporal isolation.
e. hybrid inviability.
D
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Which is most analogous to the role of GFP in recombinant DNA technology?
A. Comparing the RFLP patterns of DNA from various suspects to DNA isolated from the scene of a crime using gel electrophoresis. B. Creating a metagenomic library representing archaea bacteria that thrive in the hot springs of Yellowstone National Park. C. Using dyes to stain and detect bacteria under light microscopy from the sputum of a patient diagnosed with tuberculosis. D. Monitoring the spread of multi-drug resistant pathogens on a hospital floor by comparing antibiotic susceptibility patterns.
A research project you are doing looks at different protein-encoding genes in the human genome. What are some of the main classes of genes that you will find? (Select all that apply.)A) clusters of two or more distinct genes known as multigene familiesB) transposons that move within or between chromosomesC) single-copy genes that exist once on the genomeD) simple sequence repeatsE) tandem clusters used to increase levels of specific mRNAs
What will be an ideal response?
Suppose that you have a cell with a membrane that is permeable to water but not to Na+ or Cl? or any
other solute. There is more NaCl outside the cell than inside the cell, and the osmolarity of the cell is higher than that of the solution surrounding the cell. Which of the following should occur?
a. Overall, the cell should lose water. b. Overall, the cell should take up water, Na+, and Cl?. c. Overall, the cell should take up water. d. Overall, the cell should take up water and lose Na+ and Cl?. e. Overall, the cell should lose water and take up Na+ and Cl?.
What could decrease the passage of oxygen into the blood vessels?