Biology 152 Exam -1 questions with correct
answers
Adaptation - verified answers; Inherited characteristic of an organism that enhances its
survival and reproduction in specific environments
Natural selection - verified answers; A process in which organisms with certain inherited
characteristics are more likely to survive and reproduce than are organisms with other
characteristics.
Artificial selection - verified answers; The selective breeding of domesticated plants and
animals to encourage the occurrence of desirable traits
Observations of change, fossil record, homology, biogeography - verified answers; 4
Supporting Lines of evidence for Evolution
Analogy - verified answers; The similarity of two species due to convergent evolution. These
species have similar characteristics because they live in similar environments
Homology - verified answers; Similarity in shared characteristics because of shared common
ancestry
Population - verified answers; What is the smallest biological unit evolution can affect?
Mutation - verified answers; What is the ultimate source for new alleles?
Allele - verified answers; Any alternative forms of a gene that produce distinguishable
phenotypic effects
, Gene pool - verified answers; The aggregate of all alleles from one population to another,
resulting from the movement of fertile individuals or their gametes
No natural selection, no mutation, no genetic drift, no gene flow, random mating - verified
answers; What are the conditions of Hardy Weinberg's equation?
Founder effect - verified answers; Genetic drift that occurs when a few individuals become
isolated from a larger population and form a new population whose gene pool composition is
not reflective of that of the original population
Bottleneck effect - verified answers; Genetic drift that occurs when the size of a population is
reduced by natural disaster or human actions. Typically, the surviving population is no longer
genetically representative of the original population.
Relative fitness - verified answers; The contribution and individual makes to the gene pool of
the next generation, relative due to the contributions of other individuals
Directional, disruptive, stabilizing - verified answers; What are the 3 modes of selection
Directional - verified answers; Mode of selection where one phenotype is preferred
Disruptive - verified answers; Two extreme phenotypes are preferred, but not the middle;
mode of selection
Stabilizing - verified answers; Mode of selection, the combination of phenotypes is preffered
Sexual selection - verified answers; When individuals have certain characteristics/rituals that
make them more appealing to mates.
answers
Adaptation - verified answers; Inherited characteristic of an organism that enhances its
survival and reproduction in specific environments
Natural selection - verified answers; A process in which organisms with certain inherited
characteristics are more likely to survive and reproduce than are organisms with other
characteristics.
Artificial selection - verified answers; The selective breeding of domesticated plants and
animals to encourage the occurrence of desirable traits
Observations of change, fossil record, homology, biogeography - verified answers; 4
Supporting Lines of evidence for Evolution
Analogy - verified answers; The similarity of two species due to convergent evolution. These
species have similar characteristics because they live in similar environments
Homology - verified answers; Similarity in shared characteristics because of shared common
ancestry
Population - verified answers; What is the smallest biological unit evolution can affect?
Mutation - verified answers; What is the ultimate source for new alleles?
Allele - verified answers; Any alternative forms of a gene that produce distinguishable
phenotypic effects
, Gene pool - verified answers; The aggregate of all alleles from one population to another,
resulting from the movement of fertile individuals or their gametes
No natural selection, no mutation, no genetic drift, no gene flow, random mating - verified
answers; What are the conditions of Hardy Weinberg's equation?
Founder effect - verified answers; Genetic drift that occurs when a few individuals become
isolated from a larger population and form a new population whose gene pool composition is
not reflective of that of the original population
Bottleneck effect - verified answers; Genetic drift that occurs when the size of a population is
reduced by natural disaster or human actions. Typically, the surviving population is no longer
genetically representative of the original population.
Relative fitness - verified answers; The contribution and individual makes to the gene pool of
the next generation, relative due to the contributions of other individuals
Directional, disruptive, stabilizing - verified answers; What are the 3 modes of selection
Directional - verified answers; Mode of selection where one phenotype is preferred
Disruptive - verified answers; Two extreme phenotypes are preferred, but not the middle;
mode of selection
Stabilizing - verified answers; Mode of selection, the combination of phenotypes is preffered
Sexual selection - verified answers; When individuals have certain characteristics/rituals that
make them more appealing to mates.
