D 5. In all organisms, the coded instructions for specifying
the characteristics of the organism are directly
determined by the arrangement of the
A) twenty kinds of amino acids in each protein
B) twenty-three pairs of genes on each chromosome
C) stands of simple sugars in certain carbohydrate
molecules
D) four types of molecular bases in the genes

Texas’ gulf coastal plains are the western extension of the coastal plain extending from the atlantic ocean to beyond the rio grande. its characteristic rolling to hilly surface covered with a heavy growth of pine and hardwoods extends into east texas. in the increasingly arid west, however, its forests become secondary in nature, consisting largely of post oaks and, farther west, prairies and brushlands.