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Epistasis definitions Flashcards

Epistasis definitions
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  • Epistasis
    A genetic interaction where one gene masks or alters the phenotypic expression of another gene, such as albinism masking skin color.
  • Allele
    A variant form of a gene at a specific locus on a chromosome, influencing the trait's expression.
  • Genotype
    The genetic makeup of an organism, consisting of all its genes and alleles, which determines its hereditary potential and can influence its phenotype.
  • Phenotype
    The observable traits or characteristics of an organism resulting from the interaction of its genotype with the environment.
  • DNA
    The molecule that carries genetic instructions for the development, functioning, growth, and reproduction of all known organisms and many viruses.
  • Albinism
    A genetic condition where the presence of a specific gene masks the expression of pigment-producing genes, resulting in a lack of melanin in skin, hair, and eyes.
  • Gene
    A unit of heredity that controls specific traits by encoding proteins or functional RNA, influencing an organism's phenotype.
  • Expression
    The process by which a gene influences the phenotype of another gene, often masking its effects.
  • Skin Color
    The visible trait influenced by multiple genes, where certain genes can mask or alter the expression of others, as seen in conditions like albinism.