TLS Online TPP Program

#Question id: 5227


One of the characteristics of retrotransposons is that

#11. Evolution and Behavior
  1. they code for an enzyme that synthesizes DNA using an RNA template.

  2. they are found only in animal cells.

  3. they generally move by a cut-and-paste mechanism.

  4. they contribute a significant portion of the genetic variability seen within a population of gametes.