Final study guide D115
EXAM REVIEW Exam Questions
Answered Correctly (Qs) 2026 update
How is transcription best defined? - CORRECT ANSWERS RNA is synthesized from a DNA
template.
An amniocentesis indicates a neural tube defect when an increase in which protein is evident? -
CORRECT ANSWERS Alpha fetoprotein
Amniocentesis is recommended for pregnant with what history? - CORRECT ANSWERS 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? - CORRECT ANSWERS 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? - CORRECT ANSWERS Nondisjunction
What is the most common cause of Down syndrome? - CORRECT ANSWERS Maternal
nondisjunction
, 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? -
CORRECT ANSWERS Turner Syndrome
A person with 47, XXY karyotype has the genetic disorder resulting in which syndrome? - CORRECT
ANSWERS Klinefelter Syndrome
When a child inherits a disease that is autosomal recessive, it is inherited from whom? - CORRECT
ANSWERS Both Parents
Cystic fibrosis is caused by what type of gene? - CORRECT ANSWERS autosomal recessive
The BRCA1 and BRCA2 mutations increase the risk of which cancer in women? - CORRECT ANSWERS
ovarian
Prader-Willi syndrome causes a chromosomal defect that is what? - CORRECT ANSWERS
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? - CORRECT ANSWERS Active-Acquired
What type of immunity is produced when an immunoglobulin crosses the placenta? - CORRECT
ANSWERS passive-acquired
Where are antibodies produced? - CORRECT ANSWERS plasma cells
Which antibody initially indicates a typical primary immune response? - CORRECT ANSWERS
IgM
EXAM REVIEW Exam Questions
Answered Correctly (Qs) 2026 update
How is transcription best defined? - CORRECT ANSWERS RNA is synthesized from a DNA
template.
An amniocentesis indicates a neural tube defect when an increase in which protein is evident? -
CORRECT ANSWERS Alpha fetoprotein
Amniocentesis is recommended for pregnant with what history? - CORRECT ANSWERS 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? - CORRECT ANSWERS 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? - CORRECT ANSWERS Nondisjunction
What is the most common cause of Down syndrome? - CORRECT ANSWERS Maternal
nondisjunction
, 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? -
CORRECT ANSWERS Turner Syndrome
A person with 47, XXY karyotype has the genetic disorder resulting in which syndrome? - CORRECT
ANSWERS Klinefelter Syndrome
When a child inherits a disease that is autosomal recessive, it is inherited from whom? - CORRECT
ANSWERS Both Parents
Cystic fibrosis is caused by what type of gene? - CORRECT ANSWERS autosomal recessive
The BRCA1 and BRCA2 mutations increase the risk of which cancer in women? - CORRECT ANSWERS
ovarian
Prader-Willi syndrome causes a chromosomal defect that is what? - CORRECT ANSWERS
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? - CORRECT ANSWERS Active-Acquired
What type of immunity is produced when an immunoglobulin crosses the placenta? - CORRECT
ANSWERS passive-acquired
Where are antibodies produced? - CORRECT ANSWERS plasma cells
Which antibody initially indicates a typical primary immune response? - CORRECT ANSWERS
IgM
