The use of ________ is the easiest and most effective way of studying many animal and plant viruses
A) bacterial cultures
B) tissue or cell culture
C) live hosts
D) prophages
Answer: B
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If any of the traits that Mendel worked with had been due to linked genes, his dihybrid crosses would have
A. produced more offspring. B. produced less offspring. C. exhibited a typical phenotypic ratio of 9:3:3:1. D. produced sterile offspring. E. had different results.
The sequential process of fatty acid catabolism to acetyl CoA is called
A) the citric acid cycle. B) the oxidative phosphorylation pathway. C) the ?-oxidation pathway. D) the glyoxylate cycle. E) the Cori cycle.
The tropical rainforest trees form shallow roots concentrated near the surface in a mat few centimeters thick. These
swollen bases or braces are called:a. prop roots. b. pneumatophores. c. aerial roots. d. buttress roots. e. velamen roots.
One way to improve crop productivity is to modify flowering time. This can allow for multiple growing seasons in one year, and can also increase grain production because a smaller plant has lower resource needs. You are approached by an agricultural company that wants to create an early-flowering transgenic plant. Using your knowledge of Arabidopsis genetics, which genetic modifications would you suggest?
A. Inhibition of the embryonic flower (EMF) gene or overexpression of the LEAFY (LFY) gene would work. B. Early flowering is not possible in Arabidopsis, and is not likely to be possible in other plants. C. Inhibition of either the embryonic flower (emf) gene or the LEAFY (LFY) gene would work. D. Inhibition of the LEAFY (LFY) gene or overexpression of the embryonic flower (emf) gene would work.