1. An organism isfor a gene if it has two copies of the same allele forthe gene.2. The genotype of an organism and the interaction of the genotype with theenvironment determine the organism'sor observable characteristics.3. The law of independent assortment states that the separation of alleles forone gene are independent of that of other genes, unless the genes are4. Mendel's law ofgoverns which allele is expressed in an individual.5. People with one copy of the allele that causes sickle cell anemia are calledwhile people with two copies of the allele have the disease.