A natural population of organisms that can produce fertile offspring belong to the same ________
Fill in the blank(s) with correct word
species
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A scientist studying a material has determined that 12C, 13C, and 14C occur in the material in a ratio of 1000:10:1. How did he most likely differentiate between these forms of carbon?
A. by the number of protons in 12C, 13C, and 14C B. by the number of electrons in 12C, 13C, and 14C C. by the number of neutrons in 12C, 13C, and 14C D. by the biomasses of 12C, 13C, and 14C E. by the number of positrons in 12C, 13C, and 14C
The proteome represents _____, while the cellular proteome represents _____
a. all of the proteins able to be made by all living organisms; the proteins made by unicellular organisms b. the set of proteins made by any multicellular organism; the set of proteins made by unicellular organisms c. all of the proteins able to be expressed by an organism’s genome; the subset of proteins found in a particular cell type d. all of the proteins that are common to all living organisms; the proteins found in the same cell types of different species e. the subject of proteomics research; the subject of phenomics research
Motility is the only digestive task of the
a. mouth. b. esophagus. c. stomach. d. duodenum. e. jejunum.
Which scenario would be a modern example of Lamarckianism?
A. A strain of houseflies resistant to insecticides emerges. B. Squirrels separated by a river are found to be unable to interbreed. C. A son is born with a portion of his right index finger missing—the same portion that was severed from his father's hand in an accident. D. A species of lizards shows changes in diet and body shape after being moved to a nearby island. E. Snails are found to have thicker shells after the introduction of a predator.