TLS Online TPP Program

#Question id: 39862


Q. Why is it technically incorrect to state that two sequences are "60% homologous"? 

#Bio-Informatics
  1. Because homology is a qualitative statement of shared ancestry, not a measurement.
  2. Because 60% is too low a threshold to prove common origin.
  3. Because homology only applies to DNA, not protein sequences.
  4. Because homology must always be 100% for an alignment to be valid.