Which plant has seeds that are the richest in protein?
A) wheat
B) rice
C) barley
D) soybean
D
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The difference between a single nucleotide polymorphism (SNP) and a point mutation is that:
A. a point mutation becomes permanently incorporated into the genome, whereas a SNP does not. B. a SNP becomes permanently incorporated into the genome whereas a point mutation does not. C. a point mutation can be corrected by various repair mechanisms, whereas a SNP cannot. D. a SNP can be corrected by various repair mechanisms, whereas a point mutation cannot. E. a point mutation is when a base pair is changed to a different base pair, whereas a SNP is when the base pair differs among individuals in a population.
A G-protein coupled receptor associates with a G protein that contains how many subunits?
A. 2 B. 0 C. 3 D. 1 E. 4
The Ti plasmid has been genetically engineered to improve its utility as a cloning vector by all of the following EXCEPT
A. nonessential regions, including tumor-inducing genes, have been deleted. B. elements found in other vectors, such as selectable markers and multicloning sites have been added. C. genes responsible for resisting infection with B. thuringiensis have been added. D. genes required for the actual infection of the plant cell by the plasmid are retained.
Mutations are important because they
A) are always beneficial to the individuals affected by them. B) usually provide an individual with increased reproductive rates. C) occur in response to environmental demands. D) provide variation that can result in evolutionary change.