NU 545 UNIT 7 VIEW AHEAD EXAM 2026
TESTED QUESTIONS AND SOLUTIONS
◍ A child with which genetic disorder has a characteristic cry?
a.
Down syndrome
b.
Klinefelter syndrome
c.
Turner syndrome
d.
Cri du chat. Answer: ANS: D
Cri du chat, which literally means "cry of the cat," describes the
characteristic cry of the affected child. The correct option is the only
one with the characteristic cry.
◍ DNA formation occurs in which of the cell's structures?
a.
Nucleus
b.
Cytoplasm
c.
Organelle
,d.
Membrane. Answer: ANS: A
DNA is formed and replicated only in the cell nucleus.
◍ Which statement is true regarding X-linked recessive conditions?
a.
Such diseases use males as phenotypical carriers.
b.
These conditions are passed from affected father to all of his female
children.
c.
25% of an affected individual's grandsons will be affected.
d.
Cystic fibrosis is an example of such a condition.. Answer: ANS: B
X-linked recessive conditions are passed from an affected father to all
of his daughters, who, as phenotypically normal carriers, transmit it to
approximately one half of their sons, who are affected. Cystic fibrosis
is an autosomal dominant disease.
◍ What is the risk for the recurrence of autosomal dominant diseases?
a.
10%
b.
30%
c.
,50%
d.
70%. Answer: ANS: C
The recurrence risk for autosomal dominant diseases is usually 50%.
◍ What is an individual's genetic makeup called?
a.
Phenotype
b.
Genotype
c.
Heterozygous locus
d.
Homozygous locus. Answer: ANS: B
An individual's genotype is his or her genetic makeup. The outward
appearance of an individual is the phenotype. A locus refers to the
position a gene occupies on a chromosome.
◍ The data reporting that sickle cell disease affects approximately 1
in 600 American blacks is an example of which concept?
a.
Incidence
b.
Prevalence
, c.
Ratio
d.
Risk. Answer: ANS: B
Prevalence rate is the proportion of the population affected by a
disease at a specific point in time. Thus both the incidence rate and
the length of the survival period in affected individuals determine
prevalence. The incidence rate is the number of new cases of a disease
reported during a specific period (typically 1 year), divided by the
number of individuals in the population. A numerical expression
representing a part of a larger whole or proportion is considered a
ratio. Any factor that increases the chance of disease or injury is
considered a
◍ The ratio of the disease among the exposed population to the
disease rate in an unexposed population is referred to as what type of
risk?
a.
Attributable
b.
Contingency
c.
Causal
d.
Relative. Answer: ANS: D
A common measure of the effect of a specific risk factor is the relative
risk. Assuming a factor is the cause of a disease, attributable risk is
TESTED QUESTIONS AND SOLUTIONS
◍ A child with which genetic disorder has a characteristic cry?
a.
Down syndrome
b.
Klinefelter syndrome
c.
Turner syndrome
d.
Cri du chat. Answer: ANS: D
Cri du chat, which literally means "cry of the cat," describes the
characteristic cry of the affected child. The correct option is the only
one with the characteristic cry.
◍ DNA formation occurs in which of the cell's structures?
a.
Nucleus
b.
Cytoplasm
c.
Organelle
,d.
Membrane. Answer: ANS: A
DNA is formed and replicated only in the cell nucleus.
◍ Which statement is true regarding X-linked recessive conditions?
a.
Such diseases use males as phenotypical carriers.
b.
These conditions are passed from affected father to all of his female
children.
c.
25% of an affected individual's grandsons will be affected.
d.
Cystic fibrosis is an example of such a condition.. Answer: ANS: B
X-linked recessive conditions are passed from an affected father to all
of his daughters, who, as phenotypically normal carriers, transmit it to
approximately one half of their sons, who are affected. Cystic fibrosis
is an autosomal dominant disease.
◍ What is the risk for the recurrence of autosomal dominant diseases?
a.
10%
b.
30%
c.
,50%
d.
70%. Answer: ANS: C
The recurrence risk for autosomal dominant diseases is usually 50%.
◍ What is an individual's genetic makeup called?
a.
Phenotype
b.
Genotype
c.
Heterozygous locus
d.
Homozygous locus. Answer: ANS: B
An individual's genotype is his or her genetic makeup. The outward
appearance of an individual is the phenotype. A locus refers to the
position a gene occupies on a chromosome.
◍ The data reporting that sickle cell disease affects approximately 1
in 600 American blacks is an example of which concept?
a.
Incidence
b.
Prevalence
, c.
Ratio
d.
Risk. Answer: ANS: B
Prevalence rate is the proportion of the population affected by a
disease at a specific point in time. Thus both the incidence rate and
the length of the survival period in affected individuals determine
prevalence. The incidence rate is the number of new cases of a disease
reported during a specific period (typically 1 year), divided by the
number of individuals in the population. A numerical expression
representing a part of a larger whole or proportion is considered a
ratio. Any factor that increases the chance of disease or injury is
considered a
◍ The ratio of the disease among the exposed population to the
disease rate in an unexposed population is referred to as what type of
risk?
a.
Attributable
b.
Contingency
c.
Causal
d.
Relative. Answer: ANS: D
A common measure of the effect of a specific risk factor is the relative
risk. Assuming a factor is the cause of a disease, attributable risk is
