TY - BOOK AU - Hexter, William, AU - Yost, Henry T., ED - ED - ED - ED - SN - 013794750X : SN - 2 PY - 1976///];copyright 197646 CY - Englewood Cliffs, N.J. PB - Prentice-Hall KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Genetics N1 - Includes bibliographies and index; 5 ER -