Inheritance

Cards (13)

  • Genotype
    the genetic constitution of an organism (the alleles it has for a gene)
  • phenotype
    the expression of the genes and its interaction with the environment
  • homozygous
    a pair of homologous chromosomes carrying the same alleles for a single gene
  • heterozygous
    a pair of homologous chromosomes carrying two different alleles for a single gene
  • recessive allele
    an allele only expressed if no dominant allele is present
  • dominant allele
    an allele that will always be expressed in the phenotype
  • codominant
    both alleles are equally dominant and expressed in the phenotype
  • multiple alleles
    more than two alleles for a single gene
  • sex-linkage
    a gene whose locus is on the X chromosome
  • autosomal linkage
    genes that are located on the same chromosome (not the sex chromosome)
  • epistasis
    when one gene modifies or masks the expression of a different gene at a different locus
  • monohybrid
    genetic inheritance cross of a characteristic determined by one gene
  • dihybrid
    genetic inheritance cross for a characteristic determined by two genes