MI Unit 2 Review

Tara is a carrier for cystic fibrosis (CF), an autosomal recessive disorder. She married Tom, who is normal and not a carrier. What is the probability that they'll have a child with cystic fibrosis?

• 100%

• 75%

• 50%

• 25%

• 0%

Characterize this karyotype.

• Normal female

• Normal male

• Abnormal female

• Abnormal male

Chromosomal disorders involve having more chromosomes than needed, a common disorder known as trisomy 21 is

• huntingtons

• downs syndrome

• sickle cell

• tay sacs

Carrier screening is a test done for couples considering children. What is the first step of this fairly simple process.

• DNA extracted

• blood drawn

• PCR completed

• DNA is sequenced

What is the name of the following process? Eggs and sperm are harvested from prospective parents; eggs are fertilized by sperm in vitro, they grow just a bit then the DNA is tested and the healthy ones are implanted in the mom.

• PGD

• PCR

• PAD

• Pglo

Chorionic villus cells are removed from the _.

• liver

• placenta

• uterus

• urethra

In the PCR process the step where the double strands of DNA separate is called

• extension

• annealing

• DNA ligase

• denature

Down syndrome is which type of genetic disorder?

• Single gene

• Mitochondrial

• Chromosomal

• Multifactorial

Which of these is most likely to be diagnosed through carrier screening?

• Mitochondrial genetic disorder

• Chromosomal genetic disorder

• Multifactorial genetic disorder

• Single gene genetic disorder

An NT ultrasound can be used to determine if a fetus is at risk for a(n)

• chromosomal abnormality.

• mitochondrial abnormality.

• single-gene genetic disorder.

• multifactorial genetic disorder.