Pre-Test Active
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Pedigrees and karyotypes provide the means for individuals to identify their risks of genetic disorders. What can be
observed on a karyotype but not on a pedigree?
O family carriers of a genetic disorder
O family history of a genetic disorder
risk of a genetic disorder in offspring
O a visual image of a chromosomal defect

What happens when water’s salinity increases? mass decreases. freezing point decreases. buoyancy of objects decreases. the amount of dissolved minerals decreases.

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.