Which type of genetic disease affects males more frequently than females?
Sex-linked
recessive
Autosomal
recessive
Autosomal
dominant
Sex-linked dominant - correct answers - Sex-Linked recessive. Since
males only have one X and one Y, if the affected chromosome has the
illness, it will be expressed.
In which two conditions are chromosomal abnormalities the leading
known cause? Intellectual disability
Respiratory
disorders Fetal
miscarriage
Cardiovascular
disease Mental
illness
Check My Answer - correct answers - Intellectual disability and fetal
miscarriage. Chromosome abnormalities are the leading known cause of
intellectual disability and fetal miscarriage.
What are three examples of prenatal diagnostic
studies? Drug-sensitivity testing
Chorionic villus sampling (CVS)
Microscopy of cervical mucosa
Preimplantation genetic testing
(PGT)
Amniocentesis - correct answers - 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 11 and 14 of pregnancy. An
amniocentesis is a form of genetic testing that evaluates amniotic fluid
and is usually performed during the second trimester, between weeks 15
and 20 of pregnancy. PGT is performed on the embryo prior to
implantation.
GRADED
A+
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?
Klinefelter
syndrome Down
, Turner syndrome - correct answers - 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.
How can an X-linked recessive disease skip
generations? Mothers cannot pass X-linked genes
to their sons.
Females are hemizygous for the X chromosome.
The disease can be transmitted through female
carriers.
These diseases need only one copy of the gene in females. - correct
answers - 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.
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
Attributabl
e
Contingen
cy
Causal - correct answers - Relative risk is a ratio of probability, not
an actual occurrence of disease.
What are the empirical risks for most multifactorial diseases
based on? Direct observation
Chromosomal
testing Relative
risks
Liability thresholds - correct answers - Many factors from lifestyle to
genetics affect multifactorial diseases. Observation and evaluation of each
case individually provides the most thorough and accurate assessment.
What refers to the silenced gene of a gene pair.
Imprinted, activated, mutated, altered - correct answers - The imprinted
gene is the silent gene of a gene pair.
GRADED
What
A+ is the primary reason that some older adults have impaired
inflammation and wound healing?
The circulatory system cannot adequately perfuse
tissues. The underlying chronic illness exists.
Sex-linked
recessive
Autosomal
recessive
Autosomal
dominant
Sex-linked dominant - correct answers - Sex-Linked recessive. Since
males only have one X and one Y, if the affected chromosome has the
illness, it will be expressed.
In which two conditions are chromosomal abnormalities the leading
known cause? Intellectual disability
Respiratory
disorders Fetal
miscarriage
Cardiovascular
disease Mental
illness
Check My Answer - correct answers - Intellectual disability and fetal
miscarriage. Chromosome abnormalities are the leading known cause of
intellectual disability and fetal miscarriage.
What are three examples of prenatal diagnostic
studies? Drug-sensitivity testing
Chorionic villus sampling (CVS)
Microscopy of cervical mucosa
Preimplantation genetic testing
(PGT)
Amniocentesis - correct answers - 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 11 and 14 of pregnancy. An
amniocentesis is a form of genetic testing that evaluates amniotic fluid
and is usually performed during the second trimester, between weeks 15
and 20 of pregnancy. PGT is performed on the embryo prior to
implantation.
GRADED
A+
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?
Klinefelter
syndrome Down
, Turner syndrome - correct answers - 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.
How can an X-linked recessive disease skip
generations? Mothers cannot pass X-linked genes
to their sons.
Females are hemizygous for the X chromosome.
The disease can be transmitted through female
carriers.
These diseases need only one copy of the gene in females. - correct
answers - 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.
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
Attributabl
e
Contingen
cy
Causal - correct answers - Relative risk is a ratio of probability, not
an actual occurrence of disease.
What are the empirical risks for most multifactorial diseases
based on? Direct observation
Chromosomal
testing Relative
risks
Liability thresholds - correct answers - Many factors from lifestyle to
genetics affect multifactorial diseases. Observation and evaluation of each
case individually provides the most thorough and accurate assessment.
What refers to the silenced gene of a gene pair.
Imprinted, activated, mutated, altered - correct answers - The imprinted
gene is the silent gene of a gene pair.
GRADED
What
A+ is the primary reason that some older adults have impaired
inflammation and wound healing?
The circulatory system cannot adequately perfuse
tissues. The underlying chronic illness exists.
