Consider the genes that encode the light chain of antibody molecules in a particular mammal. There are five V regions, three J regions, and one C region. How many different light chain sequences could be formed based on combinatorial joining?

A. 9
B. 2
C. 15
D. 8


Answer: C

Biology & Microbiology

You might also like to view...

Hooker’s evening primrose keeps its flowers

closed until the early evening when they open. This is an example of

a. phototropism. b. vernalization. c. a circadian rhythm. d. photoperiodism. e. apical dominance

Biology & Microbiology

The use of any chemical in the treatment, relief, or prophylaxis of a disease is called ________.

A. selective toxicity B. prophylaxis C. chemotherapy D. nephrotoxicity E. synergism

Biology & Microbiology

Psilotum lacks

a. roots. b. a mechanism to take up water and minerals. c. vascular tissue. d. alternation of generations.

Biology & Microbiology

Which enzyme adds new nucleotides to the end of a growing strand?

A. helicase B. polymerase C. gyrase D. ligase E. endonuclease

Biology & Microbiology