Labeled, known, short stretches of DNA used to detect a specific sequence of nucleotides in a mixture are
A. gel electrophoresis.
B. genetic engineering.
C. gene probes.
D. recombinant DNA.
E. biotechnology.
Answer: C
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When did HIV-1 makes its 1st appearance in the United States?
a. 1966 b. 1999 c. 1981 d. 1992 e. 1969
Of the marine arthropods, in which group does the male carry the eggs?
a. Mandibulates b. Crustaceans c. Decapoda d. Sea spiders e. Barnacles
A parasitoid
A) is a true predator. B) actively pursues its prey. C) attacks the host indirectly by laying its eggs in or on the prey's body. D) preys only on animals.
The ____ produce(s) ____, which influences biological rhythms and the onset of sleep
a. pituitary gland; thyroid stimulating hormone b. pituitary gland; adrenocorticotropic hormone c. pineal gland; melatonin d. adrenal cortex; cortisol e. parathyroid glands; parathyroid hormone