Essentials of Biology Study Set 4

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

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

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

Which of the following is considered a mutagen? Check all that apply.

An extra three nucleotides inserted into a gene will cause a frameshift mutation.

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.

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

A karyotype shows chromosomes arranged by

Which of the following syndromes is caused by a translocation?

A child with bluish-purple skin is found to lack the enzyme diaphorase and is subsequently diagnosed with which genetic disorder?

A translocation chromosomal mutation is the exchange of segments between two homologous chromosomes.

Chromosomes for karyotyping are often obtained from a blood sample. Red blood cells, however, cannot be used for this purpose because

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.

Alleles associated with known genetic disorders can be detected using DNA microarray analysis.

Amniocentesis may be preferred over chorionic villus sampling (CVS) for karyotyping because

Inversions are chromosomal mutations that

A parent carries a deletion on one of the two homologouschromosomes. What is the probability of this individual's child carrying the same deletion?

Testing for a protein may help reveal whether or not an individual has a genetic disorder.

Mutations within genes always result in nonfunctional proteins.

Chorionic villus sampling carries less risk of causing miscarriage than amniocentesis.