Which is incorrect about restriction enzymes?
A. They were discovered by Werner Arber and Hamilton Smith in 1960s.
B. They are found in bacteria and eukaryotes.
C. They are key tools that make genetic engineering possible.
D. A specific enzyme will always cut at the same sequence.
Answer: B
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All of the following statements about cellular trafficking are true except
A) COPII-coated vesicles move materials from ER to Golgi. B) COPI-coated vesicles move materials from Golgi to the secretory vesicle. C) movement may be mediated by microtubules. D) v-SNAREs occur in vesicles; t-SNAREs occur on target sites. E) tethering proteins mediate docking between target and vesicle.
Plant pollinators include
a. bees. b. butterflies. c. flies. d. beetles. e. all of these.
The condition in which there is only one representative of a particular chromosome in a cell is called ________
Fill in the blank(s) with correct word
Why is it that falcons cannot fly as fast as a fighter jet?
A. Adaptive traits must conform to environmental conditions. B. Natural selection can produce deleterious alleles in individuals. C. Adaptive traits are constrained by historical and genetic factors. D. Not all adaptive traits are heritable.