In the figure above, which lane shows a very large, linear DNA fragment that was cut by one enzyme?
a. 1
b. 2
c. 3
d. 4
e. 5
B
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The prokaryotic transport system that involves a substrate-binding protein, a membrane-integrated transporter, and an ATP-hydrolyzing protein is
A) the ABC transport system. B) group translocation. C) symport. D) simple transport.
Which one of these statements about the hereditary lineage of the Y chromosome is not correct?
A. Ninety-four percent of the Y chromosome consists of sequences in which genetic linkage is complete. B. Because of complete linkage, each hereditary lineage of Y chromosomes is separate from every other lineage. C. Mutations along any given Y chromosome are often lost over time. D. Each unique combination of nucleotides along a Y chromosome constitutes a Ychromosome haplotype. E. Mutations that occur along the Y chromosome are completely linked to any past or future mutations along that chromosome.
Barnacles are
a. parasites. b. herbivores. c. predators. d. filter feeders. e. all of these.
The four nucleotides that make up DNA contain a sugar component called ________
Fill in the blank(s) with correct word