Study

TERMINOLOGY

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  • True/Pure-breeding
    Kind of breeding wherein the parents would produce offspring that would carry the same phenotype.
  • Selfing/Self-cross
    Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
  • Dominant
    A gene that is expressed in an organisms phenotype, masking the effect of the recessive allele or gene when present.
  • Law of Independent Assortment
    The alleles of two or more different genes get sorted into gametes independently, and each gene is not influenced by each other’s sorting.
  • Reciprocal cross
    A breeding experiment designed to test the role of parental sex on a given inheritance pattern.
  • Gene
    Basic physical and functional unit of heredity.
  • Incomplete dominance
    Lack of dominance in either of two different alleles, thus the organism's resulting physical appearance shows a blending of both alleles (Pink flower)
  • Recessive
    A gene that can be masked by a dominant gene (only shown if there are no other dominant genes)
  • Test-cross
    Genetic cross between a homozygous recessive individual with an organism of unkown genotype.
  • Allele
    One of a pair of genes that appear at a particular location on a chromosome and control the same characteristic.
  • Selective breeding
    Choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics.
  • Codominance
    A form of inheritance where the alleles of a gene pair in a heterozygote are fully expressed. Neither allele can mask the expression of the other allele. (Re
  • Heterozygote
    An organism that has heterozygous alleles (two diff alleles)
  • Backcross
    Mating between offsprings of genetically foreign parents with one of its parents or with an organism that is genetically similar to the parent.
  • Genotype
    Genetic makeup of a cell, an organism, or an individual that contributes to its trait or phenotype OR an entire set of genes
  • Homozygote
    An organism that has homozygous alleles (two same alleles)
  • Law of Segregation
    Every diploid organism gives a randomly selected allele of a trait to its offspring, in which the offspring receives one allele from each parent.
  • Phenotype
    An individual's observable traits, such as height, eye color, and blood type.
  • Outbreeding
    The mating of unrelated organisms. Gametes of different genotypes were bring together, and the resulting individual differs from the parents.
  • Characteristic
    A distinguishing quality, trait or feature of an individual, thing, disorder.
  • Inbreeding
    The mating of individuals/organisms that are closely related (same ancestor), and maintains uniform genotypes.