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How is transcription best defined? - ✔️✔️RNA is synthesized from a DNA template.
An amniocentesis indicates a neural tube defect when an increase in which protein is
evident? - ✔️✔️Alpha fetoprotein
Amniocentesis is recommended for pregnant with what history? - ✔️✔️Have a family
history of genetic disorders
35 or older
positive prenatal screening test
chromosomal condition or neural tube defect in a previous pregnancy
abnormal ultrasound results
What is the technique for prenatal diagnosis of chromosomal abnormalities at 10 to 12
weeks' gestation? - ✔️✔️Chorionic villus sampling
*Amniocentesis is usually performed during the 15th week of pregnancy or later.
What is the term for an error in which homologous chromosomes fail to separate during
meiosis or mitosis? - ✔️✔️Nondisjunction
What is the most common cause of Down syndrome? - ✔️✔️Maternal nondisjunction
, WGU D115 Exam Study Guide,100, Questions with
100% Verified Correct Answers By Expert Latest
Updated 2024.Assured A+…….
What syndrome, characterized by an absent homologous X chromosome with only a single
X chromosome, exhibits features that include a short stature, widely spaced nipples, and
webbed neck? - ✔️✔️Turner Syndrome
A person with 47, XXY karyotype has the genetic disorder resulting in which syndrome? -
✔️✔️Klinefelter Syndrome
When a child inherits a disease that is autosomal recessive, it is inherited from whom? -
✔️✔️Both Parents
Cystic fibrosis is caused by what type of gene? - ✔️✔️autosomal recessive
The BRCA1 and BRCA2 mutations increase the risk of which cancer in women? -
✔️✔️ovarian
Prader-Willi syndrome causes a chromosomal defect that is what? - ✔️✔️inherited from the
father
Which type of immunity is produced by an individual after either natural exposure to the
antigen or after immunization against the antigen? - ✔️✔️Active-Acquired