Geneticists can make complimentary DNA copies of messenger, transfer, and ribosomal RNA by using
A. reverse transcriptases.
B. restriction endonucleases.
C. palindromes.
D. ligases.
E. DNA polymerases.
Answer: A
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Most monocots have numerous ____ roots arising from the stem
a. adventitious b. primary c. secondary d. taproot e. nonfibrous
The layered membranes that jacket the central nervous system are the
A. gray matter. B. meninges. C. white matter. D. epidermis. E. myelin sheaths.
Repolarization of a neuron following an action potential most often requires opening of ______ channels.
Fill in the blank(s) with the appropriate word(s).
The Hardy-Weinberg law is useful for
A. determining the extent to which a sexually reproducing population is evolving. B. predicting when genetic drift will occur in a sexually reproducing population. C. determining when speciation will occur. D. predicting when specific groups of organisms will become extinct. E. determining if a patient has a genetic disease.