allows you to determine unclear genotypes
one-trait test cross
cross between a dominant-looking organism (B_) and a recessive organism of the same speices; offspring will determine the unknown genotype
two-trait test cross
cross unknown (B_R_) with a completely recessive organism of the same species
incomplete dominance, codimance, multiple alleles, sex-linked, polygenic
five types of modern genetics
one gene with two alleles; one dominant and one recessive
one gene with multiple alleles and other factors
one gene with two alleles producing an intermediate or third phenotype instead of the expected two
one gene with two alleles; both are dominant and are expressed in the offspring creating three phenotypes
shows both alleles having to do with cows and horses
one gene with more than two alleles may have degrees of dominance between the alleles
one gene with two alleles; alleles are found on the sex chromosomes
meaning of polygenetic
one gene that is controlled by two or more sets of different alleles found possibly on two or more sets of chromosomes
offspring has one recessive and one dominant trait from p gen
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