Each ________ is a specific segment of the DNA with the code for production of one functional product.
A. gene
B. intron
C. operator
D. exon
E. triplet
Answer: A
Biology & Microbiology
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The bottom or base of a pyramid of energy consists of:
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A species that humans bring to an area where it did not previously inhabit is a(n) _____ species.
A. exotic B. native C. endemic D. existing E. endangered
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The synthetic theory of evolution emphasizes:a
natural selection of individuals. b. population genetics. c. differential reproduction. d. overproduction of individuals. e. homologous versus vestigial structures.
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Each of the following is a main cause of cancer except
A) carcinogens. B) radiation. C) infectious agents. D) heredity. E) All are causes of cancer.
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