In one strand of a DNA molecule, adjacent nucleotides are joined by a phosphodiester linkage
__________________ Indicate whether the statement is true or false.
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Discuss antimicrobial susceptibility testing and the use of minimal inhibitory concentration (MIC) values
What will be an ideal response?
Studying the Sepia apama cuttlefish, Hanlon, Naud, and their colleagues observed that most success in producing fertilized eggs was attributed to the males guarding mated females from subsequent mating attempts by other males. What additional behavior contributed to successful production of fertilized eggs?
A. As opportunistic hermaphrodites, smaller males were able to mate and reproduce as females. B. Smaller males distracted larger males for more than 40 minutes, past the viability of their sperm, and then the smaller males mated with the females. C. The sparse population density of Sepia apama cuttlefish results in lower but equal reproductive successes among smaller and less aggressive males. D. Smaller, less aggressive males used mimicry of females to approach guarded females repeatedly to mate. E. All of the answer choices are correct.
Restriction enzymes
a. often produce staggered cuts in DNA that are useful in splicing genes. b. are like most enzymes in that they are very specific in their action. c. are natural defense mechanisms evolved in bacteria to cut apart short sequences of DNA. d. are used along with ligase and plasmids to achieve genetic recombination. e. all of these
Naked DNA does not exist in Nature but scientists can make naked DNA in a test tube.
a. true b. false