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TEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION || CHAPTERS 23||FULL COMPLETE||LATEST
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TEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION || CHAPTERS 23||FULL COMPLETE||LATEST
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ESTUDYTEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION
|| CHAPTERS 23||FULL COMPLETE||LATEST
1) What is a common misconception about evolution?
a) Evolution happens to whole populations
b) Only environments evolve
c) Individual organisms evolve
d) Genetic material does not change
**Answer**: c) Individual organisms evolve
2) What happened to the population of birds on Daphne Major Island during a drought?
a) Small-beaked birds survived better
b) Birds with large beaks survived better
c) Birds with colorful feathers survived
d) Birds that migrated survived
**Answer**: b) Birds with large beaks survived better
3) What is "microevolution"?
a) Evolution on a global scale
b) Change in allele frequencies in a population over generations
c) Evolution only in large populations
d) Evolution that only affects animals
**Answer**: b) Change in allele frequencies in a population over generations
,ESTUDY
4) Which of the following is NOT one of the three main mechanisms that cause allele frequency
changes?
a) Genetic drift
b) Natural selection
c) Gene flow
d) Migration
**Answer**: d) Migration
5) What is "natural selection"?
a) Picking traits that allow organisms to survive
b) The random mutation of genes
c) A change in the environment that causes extinction
d) The process by which evolution is reversed
**Answer**: a) Picking traits that allow organisms to survive
6) What is required for natural selection to occur?
a) Random mutations
b) Variation with a genetic component
c) Environmental influence only
d) No genetic variation
**Answer**: b) Variation with a genetic component
7) What causes genetic variation among individuals?
a) Differences in diet
b) Differences in genes or DNA segments
, ESTUDY
c) Differences in the environment
d) Changes in behavior
**Answer**: b) Differences in genes or DNA segments
8) What is a phenotype?
a) An inherited gene
b) The physical expression of a genotype influenced by the environment
c) A change in DNA
d) The total of all genetic information in a population
**Answer**: b) The physical expression of a genotype influenced by the environment
9) How can new genes and alleles arise?
a) Through natural selection
b) By mutations or gene duplication
c) By the influence of the environment
d) Through learning and adaptation
**Answer**: b) By mutations or gene duplication
10) What process increases genetic variation during sexual reproduction?
a) Mutation of DNA
b) Recombining existing alleles
c) Cloning genes
d) Natural selection
**Answer**: b) Recombining existing alleles
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