non vascular plant do not grow that tall, or A non-vascular plant is a plant without tubes to carry water and nutrients throughout the plant.Non-Vascular plants are less complex than vascular plants
An organism in which the two copies of the gene are identical is called homozygous in that gene. An organism with two different alleles of the genes is called heterozygous.
Codominance is when both alleles are expressed with the resulting phenotype being the intermediate of the two. For example, red and white phenotypes results to a pink one.