human genome
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What do you know?

Once you've read these pages thoroughly and carried out the activities, try these questions to test what you know. Click the button at the bottom of the page to get your score, and to see the correct response to any question you got wrong.

Question 1
How long did it take to complete the sequencing of the human genome?
a) 11 years
b) 13 years
c) 15 years
d) 17 years

Question 2
Approximately how many genes have been discovered in the human genome?
a) 30,000
b) 100,000
c) 250,000
d) 1,000,000

Question 3
the Human Genome Project is an example of international scientific cooperation. How many countries were involved in sequencing the DNA?
a) 5
b) 11
c) 15
d) 18

Question 4
During the sequencing process an enzyme is used to build up DNA fragments. The enzyme used is
a) DNA ligase
b) DNA polymerase
c) restriction endonuclease
d) salivary amylase

Question 5
During the sequencing process different length fragments of DNA are produced. They are labelled with different coloured fluorescent tags depending on the final base attached. The terminating bases which halt the DNA synthesis are known as:
a) nucleotide bases
b) adenine
c) dideoxynucleotide bases
d) uracil

Question 6
The DNA fragments labelled with a fluorescent tracer are separated by a process known as:
a) chromatography
b) spectrophotometry
c) centrifugation
d) gel electrophoresis

Question 7
The findings of the Human Genome Project are expected to have many positive benefits to medicine and health. Which of these developments is NOT linked to the sequencing of the human genome?
a) improvements in diagnostic testing
b) development of medicines which are specifically targeted to the genetic makeup of the patient
c) the development of new synthetic materials for use in artificial joints
d) the growth of gene therapy as ways of identifying and then modifying faulty genes are found

Question 8
Approximately how many base pairs make up the human genome?
a) 3 million
b) 4 million
c) 5 million
d) 6 million


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