WGU DI 1 5 UNIT 2 EXAM QUESTIONS
AND ANSWERS GRADED A+ 100%
VERIFIED ANSWER 2026
1 . Which type of genetic disease affects males more frequently than
females?-
: Sex-I-inked recessive. Since males only have one X and one Y, if the affected
chromosome has the illness, it will be expressed.
2. In which two conditions are chromosomal abnormalities the leading known
cause?: Intellectual disability and fetal miscarriage. Chromosome abnormalities
are the leading known cause of intellectual disability and fetal miscarriage.
3. What are three examples of prenatal diagnostic studies?: Chorionic villus
sampling (CVS), amniocentesis, and preimplantation genetic testing (PGT) are
examples of prenatal diagnostic studies and are performed in vitro. CVS is a form
of genetic testing that provides genetic information found in utero and is usually
performed between weeks 1 1 and 14 of pregnancy. An amniocentesis is a form
1/
of genetic testing that evaluates amniotic fluid and is usually performed during the
second trimester, between weeks 1 5 and 20 of pregnancy. PGT is performed on
the embryo prior to implantation.
4. Which genetic disorder is characterized by the presence of a zygote having
one chromosome with a normal complement of genes and one chromosome with
a missing gene? : Cri du chat syndrome (translated as "cry of the cat") is caused by
, a DNA deletion. This term describes the cry often heard from a baby affected by
the syndrome. Cri du chat syndrome can present as a microcephalic, low birth-
weight baby with a piercing cry.
5. How can an X-Iinked recessive disease skip generations?: The disease
can be transmitted through female carriers.
Since females have two copies of the X chromosome, the mother may provide an
unaffected X to a daughter or son. Furthermore, a daughter may not show signs
of the disease because she has the other X (the only X the father can give to a
female) to cancel it out.
6. Which type of risk is referred to as the ratio of the disease rate among
the entire population to the disease rate in an unexposed population?:
Relative risk is a ratio of probability, not an actual occurrence of disease.
7. What are the empirical risks for most multifactorial diseases based on?: Many
factors from lifestyle to genetics affect multifactorial diseases. Observation and
evaluation of each case individually provides the most thorough and accurate
assessment.
8. What refers to the silenced gene of a gene pair.: The imprinted gene
is the silent gene of a gene pair.
9. What is the primary reason that some older adults have impaired
inflammation and wound healing? : The underlying chronic illness exists.
A generalized inflammatory response seen in chronic illness depletes the
body's reserves to fight against illness.
AND ANSWERS GRADED A+ 100%
VERIFIED ANSWER 2026
1 . Which type of genetic disease affects males more frequently than
females?-
: Sex-I-inked recessive. Since males only have one X and one Y, if the affected
chromosome has the illness, it will be expressed.
2. In which two conditions are chromosomal abnormalities the leading known
cause?: Intellectual disability and fetal miscarriage. Chromosome abnormalities
are the leading known cause of intellectual disability and fetal miscarriage.
3. What are three examples of prenatal diagnostic studies?: Chorionic villus
sampling (CVS), amniocentesis, and preimplantation genetic testing (PGT) are
examples of prenatal diagnostic studies and are performed in vitro. CVS is a form
of genetic testing that provides genetic information found in utero and is usually
performed between weeks 1 1 and 14 of pregnancy. An amniocentesis is a form
1/
of genetic testing that evaluates amniotic fluid and is usually performed during the
second trimester, between weeks 1 5 and 20 of pregnancy. PGT is performed on
the embryo prior to implantation.
4. Which genetic disorder is characterized by the presence of a zygote having
one chromosome with a normal complement of genes and one chromosome with
a missing gene? : Cri du chat syndrome (translated as "cry of the cat") is caused by
, a DNA deletion. This term describes the cry often heard from a baby affected by
the syndrome. Cri du chat syndrome can present as a microcephalic, low birth-
weight baby with a piercing cry.
5. How can an X-Iinked recessive disease skip generations?: The disease
can be transmitted through female carriers.
Since females have two copies of the X chromosome, the mother may provide an
unaffected X to a daughter or son. Furthermore, a daughter may not show signs
of the disease because she has the other X (the only X the father can give to a
female) to cancel it out.
6. Which type of risk is referred to as the ratio of the disease rate among
the entire population to the disease rate in an unexposed population?:
Relative risk is a ratio of probability, not an actual occurrence of disease.
7. What are the empirical risks for most multifactorial diseases based on?: Many
factors from lifestyle to genetics affect multifactorial diseases. Observation and
evaluation of each case individually provides the most thorough and accurate
assessment.
8. What refers to the silenced gene of a gene pair.: The imprinted gene
is the silent gene of a gene pair.
9. What is the primary reason that some older adults have impaired
inflammation and wound healing? : The underlying chronic illness exists.
A generalized inflammatory response seen in chronic illness depletes the
body's reserves to fight against illness.
