.1. Which of the following is true of cordocentesis? (Points : 3) It is done at 8-10 weeks
There is a 2% risk of miscarriage
It is a screening test for chromosomal defects It tests the mother's serum
Question 2
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.1. Which of the following is true of cordocentesis? (Points : 3) It is done at 8-10 weeks
There is a 2% risk of miscarriage
It is a screening test for chromosomal defects It tests the mother's serum
Question 2.2. In normal development, humans have how many total pairs of chromosomes? (Points : 3) 2 pairs
22 pairs
23 pairs
46 pairs
Question 3.3. An area of healthcare where genetic sequencing is helpful is: (Points : 3) in the management of chronic diseases
in the medical care of children with very rare diseases in understanding differences between alleles
in understanding heart disease
Question 4.4. Congenital abnormalities are: (Points : 3) present at birth.
always genetic. manifest later in life.
express themselves in childhood.
Question 5.5. The type of genetic testing genetic testing used to confirm a diagnosis when a particular condition is suspected based on physical signs and symptoms is: (Points : 3)
carrier testing presymptomatic testing diagnostic testing predictive testing
Question 6.6. Sickle-cell anemia is primarily a condition of the: (Points : 3) red blood cells.
pancreas. lungs.
nervous system.
Question 7.7. The cause of Fragile X syndrome is: (Points : 3) repeating trinucleotides.
fragility on the X and Y chromosomes. a defect in chromosome 15.
one Y and two X chromosomes.
Question 8.8. Which of the following is true of Down syndrome? (Points : 3) It is also known as Trisomy 21
It only occurs in males
It is caused by a fragile X chromosome
Persons with Down syndrome always have a low IQ
Question 9.9. Newborn screening that is mandatory in all states includes: (Points : 3) Down syndrome testing
Fetal diseases testing Phenylketonuria testing Jorgen’s disease testing
Question 10.10. Genetic tests are used in all of the following scenarios except: (Points : 3) to test for rapid identification of bacteria
to fine tune dosages of drugs
to test the genes in individual cancers to test the evolution of viruses
Question 11.11. All of the following are true of carrier prenatal testing except: (Points : 3) They can show if a person carries a gene for an inherited disorder.
It can be used to test for Down syndrome. It can be used to test for Cystic Fibrosis. It can be done before pregnancy.
Question 12.12. Which of the following is true of recessive genes? (Points : 3) It results in an abnormal trait when only one allele is defective
The gene is located on the X chromosome of a female It determines the trait being expressed
It occurs when both alleles are defective
Question 13.13. Embryonic and fetal growth anomalies can be detected by all of the following except: (Points : 3)
physical examination ultrasound Cerebrospinal fluid draw exploratory surgery
Question 14.14. Genes are defined as: (Points : 3) the basic unit of heredity.
specific sequences of RNA.
specific sequences of both DNA and RNA. abnormalities of chromosome structure.
Question 15.15. The triple screen test is used to determine: (Points : 3) neural tube defects
fetal diseases immunologic diseases all genetic conditions
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