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Heredity

TermDefinition
Genetics study of genes or heredity
Inheritance (heredity) how traits, or characteristics, are passed on from generation to generation.
Gregor Mendel The Father of Genetics
allele an alternative form of a single gene passed from generation to generation
Dominant The gene that is usually "shown"
Recessive the gene that is usually masked or covered up
Homozygous organism has two of the same alleles for a specific trait.
Heterozygous the organism has different alleles for a specific trait
Genotype the set of genes in our DNA which is responsible for a particular trait
Phenotype The observable trait is called the
Law of Segregation the two alleles for each trait separate during meiosis
true-breeding “pure bred” a homozygous organism
hybrid heterozygous organism
Monohybrid crossing parents with different alleles for a single trait
Dihybrid crossing parents with different alleles for two or more traits in the same plant
Law of Independent Assortment A random distribution of alleles occurring during gamete formation
Punnett squares show how crosses are made and can calculate the probability of a trait that is passed on.
Pedigrees diagrams that trace the inheritance of a particular trait through several generations.
Simple Dominance a hetrozygous gene's dominant allele hides the trait of the recessive allele
Incomplete Dominance a hetrozygous gene's dominant allele and recessive allele have a "in between" phenotype.
Codominance both alleles are expressed in the heterozygous condition.
Created by: Curt