The use of beta-glucuronidase (GUS) in the generation of Roundup-Ready soybeans is an example of a ________
A) positive marker B) herbicide resistance
C) agrobacterium resistance D) negative marker
Answer: A
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If one left a "pasteurized" flask of broth for a long time at room temperature, it would stay sterile forever, at least in principle.
Answer the following statement true (T) or false (F)
Which of the following is NOT an example of
gene flow?
a. several chimpanzees migrate from their colony to join another one close by b. spores from a mushroom are carried by the wind thousands of miles c. wild cherries are eaten by a migrating bird and the seeds released many miles away d. a small group of humans left Africa about 100,000 years ago and established new colonies in the middle East and Europe e. all of these are examples of gene flow
In prokaryotes, the DNA molecule is
A) made of sugars and lipids. B) single-stranded. C) circular. D) more than 1.8 meters (6 feet) long when uncoiled.
The rediscovery in 1900 of Mendel's now famous experiments of the 1850–60s:
a. solved the argument about whether natural selection acted in a slow way on small genetic changes or in a sudden, saltational manner. b. added fuel to the argument about whether natural selection acted in a slow way on small genet-ic changes or in a sudden, saltational manner. c. None of the above. d. All of the above.