When DNA Fingerprinting Is Performed, Why Might an Individual Possess

Multiple Choice

When DNA fingerprinting is performed, why might an individual possess two different numbers of repeats for the same chromosomal region?

A) Intergenic DNA may vary from one cell to another in the same individual.
B) The individual has different numbers of the same repeated sequence on each homologous chromosome.
C) The sample is contaminated with the DNA of another individual.
D) Each sister chromatid of a chromosome may contain different numbers of repeats.
E) It is not possible for this to occur.