The Seventeenth Amendment in the National Archives. The Seventeenth Amendment (Amendment XVII) to the United States Constitution established the popular election of United States Senators by the people of the states.riginally, under Article I, Â§ 3, Clauses 1 and 2 of the Constitution, each state legislature elected its state's senators for a six-year term. Each state, regardless of size, is entitled to two senators as part of the Connecticut Compromise between the small and large states.
Development is the process through which an embryo becomes an adult organism and eventually dies. Through development, an organism's genotype is expressed as a phenotype, exposing genes to the action of natural selection.
The genotype of an organism is often expressed using letters. The visible expression of the genotype is called an organismâs phenotype. Alleles are not created equal. Some alleles mask the presence others.Alleles that are masked by others are called recessive alleles.he illustration explores the relationship between the presence of different alleles at a specific locus and an organism's genotype and phenotype. The organism in the model is a plant. It is diploid and the trait is flower color.