True or false? _____ Mutations always result in negative effects on the organism. _____ Mutations are always large-scale (e.g., involving at least 10,000 base pairs of DNA)
DNA).
_____ Mutations are never large-scale (e.g., involving at least 10,000 base pairs of DNA).
_____ Most mutations are caused by an environmental pollutant.
_____ Mutation rates are constant in all organisms.
_____ Mutation rates are higher in men than in women because men have higher metabolic
rates than women.
_____ Mutation occurs every time a cell divides.
_____ All mutations provide genetic variation on which evolution may act.
What will be an ideal response?
f Mutations always result in negative effects on the organism.
f Mutations are always large-scale (e.g., involving at least 10,000 base pairs of DNA).
f Mutations are never large-scale (e.g., involving at least 10,000 base pairs of DNA).
f Most mutations are caused by an environmental pollutant.
f Mutation rates are constant in all organisms.
f Mutation rates are higher in men than in women because men have higher metabolic rates
than women.
f Mutation occurs every time a cell divides.
f All mutations provide genetic variation on which evolution may act.
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Which of the following has the longest fossil record?
A. Homo sapiens B. Homo erectus C. Homo habilis D. Homo neanderthalensis E. Homo heidelbergensis
The phases of each PCR cycle listed in order are ____
a. denaturation, extension, and annealing b. annealing, extension, and denaturation c. extension, denaturation, and annealing d. annealing, denaturation, and extension e. denaturation, annealing, and extension
In the past century, warming temperatures have caused sea level to rise:
a. 20 centimeters b. 20 feet c. 20 inches d. 2.0 centimeters e. 2 meters
Succession in small ponds and lakes is usually dependent on the input of ________ from outside the ecosystem
Fill in the blank(s) with correct word