Answer:
the mutation they are talking about deals with genes/dna
Explanation:
they show one person (j) who does not have the mutation and therefore does not have the syndrome h
then they show person (k) who has a mutation and therefore had syndrome h
look carefully at the letters on the lines. they represent the DNA in people and correlate to each other
(I hope this helped a little bit and I may he completely wrong but I think I'm mostly right)
