TLS Online TPP Program

#Question id: 1973


Clonal selection is an explanation for how

#Section 2: General Biology
  1. a single type of stem cell can produce both red blood cells and white blood cells.

  2. V, J, and C gene segments are rearranged.

  3. an antigen can provoke production of high levels of specific antibodies.

  4. HIV can disrupt the immune system.