balanced polymorphism
A type of polymorphism in which the frequencies of the coexisting forms do not change noticeably over many generations.
bark ...
Balanced polymorphism: The maintenance of two or more alleles in a population due to a selective advantage of the heterozygote.
Balanced Polymorphism
Polymorphisms
A polymorphism is a genetic variant that appears in at least 1% of a population.
balanced polymorphism Occurs when different phenotypic expressions are maintained at a relatively stable frequency in a population.
baleen The filtering plates that hang from the upper jaws of baleen whales.
from selection in the heterozygous individuals in populations of diploid organisms (recessive alleles are only expressed in the less common homozygous individuals). Natural selection can also maintain genetic variation in balanced polymorphisms.
Natural selection favours organism with two extreme forms of a characteristic
Balanced polymorphism: equilibrium of non-carriers and carriers of a characteristic caused by natural selection
Sickle-cell anaemia ...
 See also: Polymorphism, Enzyme, Population, Chromosome, Human
  
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