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Vocab 9.2

Genetic Crosses

Genotype The entire genetic makeup of an organism; also the combination of genes for one or more specific traits
Phenotype An organism's appearance or other detectable characteristic that results from the organism's genotype and the environment
Homozygous Describes and individual that has identical alleles for a trait on both homologous chromosomes
Heterozygous Describes an individual that has two different alleles for a trait
Phenotypic Ration The ration of phenotypes produced by a cross
Testcross The crossing of an individual of unknown genotype with a homozygous recessive individual to determine the unknown genotype
Complete Dominance A relationship in which one allele is completely dominant over another
Incomplete Dominance A condition in which a trait in an individual is intermediate between the phenotype of the individual's two parents because the dominant allele is unable to express itself fully
Codominance A condition in which both alleles for a gene are fully expressed
Dihybrid Cross A cross between individuals that have different alleles for the same gene
Created by: GutzwillerL19