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Lesson Worksheet: Applications of DNA Fingerprinting Biology

In this worksheet, we will practice outlining the basic principles of DNA fingerprinting and recalling some applications of it.


Which of the following is not an application of DNA fingerprinting?

  • AIdentifying unknown corpses and human remains
  • BIdentifying the inheritance pattern of genes
  • CSettling paternity disputes
  • DForensics and criminal investigations


The research of Sir Alec Jeffreys revealed that every human being has a different DNA fingerprint, which can be used to differentiate between individuals. However, DNA fingerprinting can also be used to settle paternity and maternity disputes. How is that possible?

  • AThe length of the child’s chromosomes is equal to the average length of the parents’ chromosomes.
  • BThe proteins coded by these DNA sequences produce phenotypes that are a blend between the phenotypes of the parents.
  • CThe DNA fingerprint of a child is a combination of the repetitive DNA sequences inherited from his parents.
  • DIt is not possible because DNA fingerprints are entirely unique to each individual and cannot be inherited.


DNA fingerprinting can be used to differentiate between individuals on the basis of .

  • Athe difference between the repetitive DNA sequences of each person
  • Bthe difference in the sequence of genes responsible for creating fingerprints
  • Cthe difference in chromosomal structure between people
  • Dthe difference of phenotypes for the same gene among a population


A man died in a fire and the police are trying to identify the body. After an initial inspection, it was found that the victim’s body was entirely burnt. Which of the following samples could the authorities use to search for the victim’s identity in their databases?

  • AThe victim’s fingerprints
  • BA facial picture of the victim
  • CA DNA sample from the victim’s corpse
  • DThe victim’s footprints


Which of the following statements about DNA is correct?

  • ASiblings born to the same parents share over 75% of their DNA.
  • BThe DNA of every human, apart from identical twins, is unique.
  • CEach cell in the human body contains 46 genes.
  • DSiblings born to the same parents share approximately 75% of their DNA.


Which of the following is not an application of DNA fingerprinting?

  • AForensically analyzing evidence (e.g., hair and blood) left at crime scenes
  • BDetermining the paternity of a child
  • CPreventing the inbreeding of closely related captive animals
  • DInserting new genes into organisms
  • EDiagnosing inherited genetic disorders


Fill in the blank: DNA fingerprinting can be used to identify closely related organisms, analyze samples found at crime scenes using forensic technology, and .

  • Acreate recombinant DNA
  • Bdetermine the biological parents of a child
  • Ctreat genetic and hereditary diseases
  • Dgenerate synthetic sections of DNA


The paternity of a child is in dispute. A DNA fingerprint is constructed for the child, their mother, and their potential father.

True or False: Based on the information in the diagram provided, the man is the biological father of this child.

  • ATrue
  • BFalse


Some characteristics of eukaryotic DNA are provided in the list below:

  1. Eukaryotic DNA is contained within the nucleus.
  2. Eukaryotic DNA is linear.
  3. The majority of eukaryotic DNA is noncoding and varies between individuals.
  4. Eukaryotic DNA is bound to histone proteins.

Which number indicates the characteristic that DNA fingerprinting relies on?


Fill in the blank: DNA fingerprinting relies on finding sections of repetitive, DNA.

  • Acoding
  • Bnoncoding

This lesson includes 18 additional questions for subscribers.

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