Essentials of Biology Study Set 4

Biology

Quiz 13 :

Mutations and Genetic Testing

Quiz 13 :

Mutations and Genetic Testing

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Chromosome 7 may lose an end piece resulting in Williams syndrome. This is an example of a chromosomal
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C

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A known abnormality in a gene's sequence that can be linked to a genetic disease is called a(n)
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C

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Genetic counseling can help determine the risk of inheriting sickle cell disease in a family.
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True

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Which of the following is considered a mutagen? Check all that apply.
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An extra three nucleotides inserted into a gene will cause a frameshift mutation.
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To perform an in vivo gene therapy treatment, cells are removed from the patient's body, normal genes are added to them, and then the cells are returned to the patient's body.
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A missing piece of chromosome 5 may result in a child whose glottis and larynx do not develop properly, resulting in an abnormal cry. This is called
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A karyotype shows chromosomes arranged by
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Which of the following syndromes is caused by a translocation?
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A child with bluish-purple skin is found to lack the enzyme diaphorase and is subsequently diagnosed with which genetic disorder?
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A translocation chromosomal mutation is the exchange of segments between two homologous chromosomes.
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Chromosomes for karyotyping are often obtained from a blood sample. Red blood cells, however, cannot be used for this purpose because
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A chromosome normally has the following sequence of genes: f-g-h-i-j-k-l-m. Upon testing, an individual is found to have the following sequence: f-g-h-i-j-k-k-j-i-l-m. What kind(s) of chromosomal mutation(s) does this chromosome have? Check all that apply.
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Alleles associated with known genetic disorders can be detected using DNA microarray analysis.
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Amniocentesis may be preferred over chorionic villus sampling (CVS) for karyotyping because
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Inversions are chromosomal mutations that
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A parent carries a deletion on one of the two homologouschromosomes. What is the probability of this individual's child carrying the same deletion?
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Testing for a protein may help reveal whether or not an individual has a genetic disorder.
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Mutations within genes always result in nonfunctional proteins.
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Chorionic villus sampling carries less risk of causing miscarriage than amniocentesis.
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