A triplet is a series of three mRNA bases
a. True
b. False
Indicate whether the statement is true or false
True
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In archaeology, the validity of a particular interpretation is strengthened by __________
A. the political convictions of the researcher B. its relevance to current philosophies and concerns C. confirmation through independent lines of evidence D. the recognition that bias is present in all scientific research
In 1990 about two-thirds of all American Samoans were severely overweight
Indicate whether the statement is true or false
Which of the following can be attributed to "Lucy"?
A. Lucy was the first australopithecine to be discovered. B. Lucy is the most complete skeleton (about 40 percent) of an early hominid (A. afarensis). C. Lucy shows that "hyper-robust" australopithecines appeared 2 million years earlier than originally thought. D. The discovery of her skeleton solved the riddle of the Piltdown skull.
Animals with a nerve cord along the back and gill slits during some developmental stage are called which of the following?
a. insects b. invertebrates c. chordates d. metazoans e. underdeveloped