35.  The work of Mendel was aided by the fact that he understood  ________. A. probability B. mitosis C. selection D. meiosis

14.  The entire genetic code consists of a total of ____ messages. A. 64 B. 4 C. 8 D. 1000s of

9.   If the DNA triplets were ATGCGT, the mRNA codon would be ______. A. AUGCGU B. ATGCGT C. UAGCGU D. UACGCA

44. A woman named Charlene who is a carrier for a sex-linked disease marries a man sick with a sex-linked disease. What percent of the females will be sick? A. 25% B. 50% C. 75% D. 100%

3.   What form of RNA carries the code from DNA to where protein is assembled.  A. transfer B. messenger C. ribosomal D. nuclear

19.  The enzyme RNA polymerase is used to  ________. A. shorten RNA B. make DNA  C. shorten DNA D. make RNA

39.  How many rRNAs are used in the construction of a functioning ribosomes? A. 1 B. 2 C. 3 D. more 

12.  A mutation consisting of a single deletion 5 per-cent into a forming protein chain will probably result in _________ damage to the shape and function of the forming protein. A. very little B. no functional C. some  D. drastic 

1.   Functional messenger RNA contains the nitrogen base _________. A. thioracid B. uracil C. uracid D. thoracil

28.  Which part of a cell membrane is a long chained molecule?  A.  phosphate                    B.  hydrophobic                  C.  hydrophilic                   D.  disaccharides