Therefore, both parents are giving two distinct alleles to the offspring. In the F1 generation of a homozygous cross of two parents, each offspring is heterozygous dominant and expresses the dominant trait. In the F2 generation, the genotype and phenotype are various and show the spectrum of possibilities within the offspring. A test cross is used to determine the genotype of one of the parents. A cross is conducted between the unknown and a recessive trait.
Incomplete dominance is when the phenotype shown is an intermediate of the homozygous phenotypes.
Neither dominant nor recessive traits are present. Although the phenotype is an intermediate, the alleles do not blend. Codominance is when each allele is expressed fully. Two dominant traits are crossed, therefore, both are expressed. Each group member will turn in a lab paper with all questions answered, and the entire group will turn in an answer for the last question.