About this Study Set
This study set covers Genetics And Genealogy through
15 practice questions.
A challenging quiz focusing on the intersection of genealogy, human physiology, and hereditary health conditions. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 15 questions from the
Genetic Inheritance and Human Health study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which specific inheritance pattern describes a condition caused by a mutation in a gene located on the X chromosome, where males are more likely to be affected than females?
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A
Autosomal dominant
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B
X-linked recessive
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C
Mitochondrial inheritance
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D
Y-linked dominant
2
What is the term for the phenomenon where an individual has two different alleles at a particular gene locus, often acting as a carrier for recessive health traits?
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A
Homozygosity
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B
Hemizygosity
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C
Heterozygosity
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D
Polyploidy
3
In mitochondrial inheritance, which parent is responsible for passing the mitochondrial DNA to all of their offspring?
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A
The father only
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B
The mother only
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C
Both parents equally
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D
Neither parent
4
Which genetic condition is characterized by a trinucleotide repeat expansion in the HTT gene, leading to progressive neurodegeneration?
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A
Huntington's disease
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B
Cystic fibrosis
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C
Sickle cell anemia
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D
Hemophilia
5
What is the primary physiological mechanism that causes Sickle Cell Disease, often traced through genealogical lineage in populations with high malaria prevalence?
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A
Deficiency in Vitamin B12
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B
Abnormal hemoglobin S polymerization
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C
Excessive production of white blood cells
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D
Genetic deletion of chromosome 21
6
Which type of genetic testing assesses the likelihood of developing a disease based on the cumulative effect of multiple genetic variants across the genome?
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A
Monogenic risk scoring
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B
Polygenic risk scoring
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C
Karyotype analysis
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D
Exome sequencing
7
In autosomal recessive inheritance, what is the probability that the offspring of two carrier parents will be affected by the disorder?
8
What is the scientific term for the proportion of phenotypic variation in a population that is attributable to genetic variation among individuals?
-
A
Penetrance
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B
Expressivity
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C
Heritability
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D
Epistasis
9
Which gene mutation is most famously associated with an increased genealogical risk for hereditary breast and ovarian cancer syndrome?
-
A
BRCA1/BRCA2
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B
CFTR
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C
LDLR
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D
F8
10
What occurs when a gene's expression is modified by environmental factors or chemical tags without changing the underlying DNA sequence?
-
A
Epigenetic modification
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B
Genetic recombination
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C
Chromosomal translocation
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D
Point mutation
11
Which condition is an example of an autosomal dominant disorder that typically manifests in adulthood, characterized by the growth of cysts in the kidneys?
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A
Polycystic kidney disease
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B
Phenylketonuria
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C
Tay-Sachs disease
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D
Thalassemia
12
What is the clinical significance of 'consanguinity' in a genealogical health context?
-
A
Increased risk of autosomal recessive disorders
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B
Reduced risk of polygenic traits
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C
Higher probability of spontaneous mutation
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D
Neutral impact on health
13
In the context of pharmacogenomics, what does the CYP450 gene family primarily regulate in the human body?
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A
Bone density regulation
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B
Drug metabolism in the liver
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C
Insulin production
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D
Visual pigment synthesis
14
What structural change in a chromosome occurs when a segment of the chromosome breaks off and reattaches in reverse orientation?
-
A
Inversion
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B
Duplication
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C
Deletion
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D
Translocation
15
Which syndrome is caused by a trisomy of chromosome 21, often linked to maternal age but not strictly hereditary in most instances?
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A
Down syndrome
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B
Turner syndrome
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C
Klinefelter syndrome
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D
Williams syndrome
