In medicine, agriculture, and conservation applications of biotechnology, the common genetic unit used is the
A. allele.
B. gene.
C. centromere.
D. nucleotide (nitrogen base).
E. chromatid.
B. gene.
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Hormones released by endocrine glands function as signal molecules
A. true B. false
Which of the following is not a characteristic of the transcriptional ground state in higher eukaryotes?
A. Gene promoters are essentially inactive in the absence of regulatory proteins. B. RNA polymerase initiates efficient transcription in the absence of repressors. C. Access to promoters is restricted by the structure of chromatin. D. Virtually every gene requires activation.
All of the following are exoenzymes except ________.
A. ATP synthase B. collagenase C. streptokinase D. penicillinase
Humans, chimpanzees, and bonobos are both
A. primates and Homo sapiens. B. Homo sapiens. C. primates. D. hominids. E. primates and hominids.