A phenotype results from the expression of an organism's genes as well as the influence of environmental factors and the interactions between the two. When two or more clearly different phenotypes exist in the same population of a species, the species is called polymorph.The genotype of an organism is the inherited instructions it carries within its genome.he concept of phenotype can be extended to variations below the level of the gene that affect an organism's fitness. For example, silent mutations that do not change the corresponding amino acid sequence of a gene may change the frequency of guanine-cytosine base pairs (GC content).
President Woodrow Wilson persistently vetoed the Immigration Act of 1917, however Congress overrode his veto and put this law into effect in May 1917. This act increased the head tax on each adult immigrant to $8, barred most Asian immigrants, and required all adults to take a literacy test.
Ford vetoes the Freedom of Information Act Amendments believing not enough protection is given to sensitive and classified intelligence documents. Congress overrides Fordâs veto on November 21, 1974 making the bill law. November 1, 1974 Ford meets with an ailing Richard Nixon in a Long Beach, California hospital. November 5, 1974