WGU D115 OA STUDY GUIDE UNIT 2
EXAM QUESTIONS AND ANSWERS 100%
PASS 2026/2027
How is transcription best defined? - ANS RNA is synthesized from a DNA template
Process where the information in a strand of DNA is copied into mRNA
How is translation best defined? - ANS Follows transcription
mRNA leaves nucleus and enters cytoplasm
RNA directs the synthesis of a polypeptides for protein synthesis
An amniocentesis indicates a neural tube defect when an increase in which protein is evident? -
ANS Alpha fetoprotein
Ex: spina bifida or anencephaly
Amniocentesis is recommended for pregnant women with what history? - ANS Have a family
history of genetic disorders
@2026 ALLRIGHTS RESERVED 1
, What is the technique for prenatal diagnosis of chromosomal abnormalities at 10-12 weeks
gestation? - ANS Chorionic villus sampling CVS
Amniocentesis during the 15th week of pregnancy
What is the term used for an error in which homologous chromosomes fail to separate during
meiosis or mitosis? - ANS Nondisjunction
What is the most common cause of Down Syndrome? - ANS Maternal nondisjunction
embryo now has three copies of chromosome 21
What syndrome, characterized by an absent homologous X chromosome with only a single X
chromosome, exhibits features that include a short statue, widely spaced nipples, and webbed
neck? - ANS Turner
A person with 47, XXY karyotype has the genetic disorder resulting in which syndrome? -
ANS Klinefelter: males
When a child inherits a disease that is autosomal recessive, it is inherited from whom? -
ANS Both parents
In order to have a disorder that is autosomal recessive a pt must inherit two mutated genes,
one from each parent
Cystic fibrosis is caused by what type of gene? - ANS Autosomal recessive
@2026 ALLRIGHTS RESERVED 2
EXAM QUESTIONS AND ANSWERS 100%
PASS 2026/2027
How is transcription best defined? - ANS RNA is synthesized from a DNA template
Process where the information in a strand of DNA is copied into mRNA
How is translation best defined? - ANS Follows transcription
mRNA leaves nucleus and enters cytoplasm
RNA directs the synthesis of a polypeptides for protein synthesis
An amniocentesis indicates a neural tube defect when an increase in which protein is evident? -
ANS Alpha fetoprotein
Ex: spina bifida or anencephaly
Amniocentesis is recommended for pregnant women with what history? - ANS Have a family
history of genetic disorders
@2026 ALLRIGHTS RESERVED 1
, What is the technique for prenatal diagnosis of chromosomal abnormalities at 10-12 weeks
gestation? - ANS Chorionic villus sampling CVS
Amniocentesis during the 15th week of pregnancy
What is the term used for an error in which homologous chromosomes fail to separate during
meiosis or mitosis? - ANS Nondisjunction
What is the most common cause of Down Syndrome? - ANS Maternal nondisjunction
embryo now has three copies of chromosome 21
What syndrome, characterized by an absent homologous X chromosome with only a single X
chromosome, exhibits features that include a short statue, widely spaced nipples, and webbed
neck? - ANS Turner
A person with 47, XXY karyotype has the genetic disorder resulting in which syndrome? -
ANS Klinefelter: males
When a child inherits a disease that is autosomal recessive, it is inherited from whom? -
ANS Both parents
In order to have a disorder that is autosomal recessive a pt must inherit two mutated genes,
one from each parent
Cystic fibrosis is caused by what type of gene? - ANS Autosomal recessive
@2026 ALLRIGHTS RESERVED 2
