A chromosome's gene sequence that was ABCDEFG before damage and ABFEDCG after is an example of
A. inversion.
B. deletion.
C. duplication.
D. translocation.
E. aneuploidy.
Answer: A
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Inbred lines of animals, such as laboratory mice, are useful for studying complex traits because:
A. individuals are genetically identical, so differences in traits must be due to environmental differences. B. although individuals differ both genetically and environmentally, the genetic differences are known, so differences in traits can be understood. C. animals are kept in identical environments, so any differences in traits are due to differences in their genes. D. both genetic and environmental differences between individuals are known, making differences in their traits easy to understand. E. None of these choices is correct.
The phenotype is the expression of the genotype.
a. true b. false
Small cells function more effectively, because as cells become larger their surface area to volume ratio
A. decreases proportionally to the radius of the cell (r). B. stays the same. C. increases proportionally to the radius of the cell (r). D. increases proportionally to the cell's radius squared (r2). E. decreases proportionally to the cell's radius squared (r2).
The enzymes and electron carriers involved in electron transport and oxidative phosphorylation are located in the ________ membrane of the mitochondrion.
A. neither inner nor outer B. outer C. inner D. inner and outer