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Genetics Vocab

TermDefinition
Genotype the DNA code carried by an individual
Phenotype physical appearance of an individual
Allele a variation of a gene
Dominant the allele that will always be expressed
Recessive the allele that will always be masked
Hybrid an organism which is heterozygous for a given trait
Heterozygous having both allele types
Homozygous having 2 copies of one allele type
Monohybrid cross a cross that focuses on a single trait
Dihybrid cross a cross that focuses on two traits
Independent assortment alleles for one trait sort independent of another trait
Segregation an individual gets only one allele for each trait from each parent
Punnett Square a table used to predict ratios of a trait based on the parent’s genotypes
Pgeneration parental (purebreeding)
F1generation first offspring of P cross
F2generation offspring of F1 cross
Genetics science of heredity
Purebred homozygous for the trait
Codominance both alleles are expressed when present
Incomplete Dominance the heterozygous is midway between the two homozygous phenotypes
Karyotype picture of all the chromosomes in an individual
Nondisjunction chromosomes fail to separate; resulting in too many or too few chromosomes in the offspring
Created by: mrbstp