Chromosomal Changes Quiz GA-GSE Biology A-CR 17-18

Gary has a chromosomal deletion and Heather has a chromosomal insertion. Which best describes which disease each may have?

A.Gary might have DiGeorge syndrome and Heather might have Fragile X syndrome.

On which feature is science based?

A.detailed research with reliable sources

Chromosomal mutations can have a variety of effects on individuals. Down syndrome is a disorder that causes problems such as mild to moderate mental retardation and slow or stunted development. A common form of this disorder is the result of a genetic mutation that occurs when there is an extra chromosome 21. Which type of chromosomal mutation causes this form of Down syndrome?

A.nondisjunction

Which best describes the process of insertion?

A.occurs when part of a chromosome breaks off and is inserted into the middle of another chromosome

On which feature is pseudoscience based?

B.static information that does not change

Why is it important to know the difference between science and pseudoscience?

B.to make informed decisions

Which would least likely result from a chromosomal change?

C.enhanced ability of the organism to reproduce

A chromosome has an inversion. Which describes a pericentric inversion?

C.switching of genes around the centromere

Which of the following precautions should be taken to reduce the risk of chromosome mutations?

C.wear a lead protective shield when having teeth X-rays

Consider the diagram. mc005-1.jpg Which chromosomal change is represented?

D.insertion