TLS Online TPP Program

#Question id: 13104


With the help of DNA fingerprinting which can be used to determine paternity. There are three babies (Baby A, Baby B and Baby C) in a maternity ward, and three sets of confused and worried parents. (Father and Mother #1 are a couple, as are Father and Mother #2, and Father and Mother #3.) 
You do each PCR reaction and load each one into a separate well of an agarose gel, and then run the gel.
 

 
Why is it that some people show two bands?

#SCPH05 I Biotechnology
  1. They are heterozygotes at this region.
  2. They are homozygotes at this region.
  3. Because longer the DNA fragments.
  4. Because the more repeats is found.