To determineconclusively that the 13 Galápagos finch species are descended from a common ancestor, biologists
utilized ____.
a. Darwin's notebooks describing his observations
b. comparative molecular biology
c. comparative embryology
d. Mendelian genetics
e. modern historical biogeography and Darwin's observations
ANSWER: b
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What unusual features would be found on the newborn if human embryos did not experience apoptosis? What will be an ideal response?
The source of wild yeasts carried in a biofilm on grapes is the ________.
A. must B. wort C. malt D. bloom
Which microscope is most useful for visualizing a biofilm?
A) compound light microscope B) phase-contrast microscope C) fluorescence microscope D) scanning acoustic microscope E) transmission electron microscope
A flexible, spiral-shaped bacterium is called a
A. spirochete. B. vibrio. C. coccobacillus. D. spirillum. E. sarcina.