In a population with brown and green alleles for color, genetic drift
A. occurs when individuals move into or out of a population, changing the allele frequencies in the population.
B. has more effect on the evolution of a large population.
C. always increases the frequency of brown alleles in the population.
D. causes populations to become better adapted to their environments.
E. has more effect on the evolution of a small population.
E. has more effect on the evolution of a small population.
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Gene therapy is performed by ____
a. replacing the genomes of an individual with a brand new set of genomes with the goal of treating a genetic defect b. replacing a defective gene in an individual with a normal gene with the goal of treating a genetic disorder c. transferring a mutated gene into an individual with the goal of treating a genetic defect d. transferring a normal or a modified gene into an individual with the goal of treating a genetic defect e. replacing a defective enzyme in an individual with a normal enzyme with the goal of treating a genetic disorder
Which of the following is NOT characteristic of RNA?
a. single stranded b. ribose sugar c. found only in the nucleus d. uracil base e. does not contain thymine
Most scientists believe that the lateral buds farthest from the top of a tree are the least inhibited from sprouting because they
A) are shaded by the top of the tree. B) receive the least light. C) produce gibberellins. D) receive the most cytokinins from the roots. E) are the most affected by gravity.
A(n) __________ solution has an osmotic pressure that is greater than the cell.
Fill in the blank(s) with the appropriate word(s).