Course Introduction
Medical Genetics Study Guide Questions
Medical Genetics is an interdisciplinary course that explores the principles of genetics as they apply to human health and disease. It covers the molecular basis of genetic inheritance, chromosomal abnormalities, gene mapping, and the genetic mechanisms behind common and rare diseases. The course emphasizes the role of genetics in diagnosis, management, and counseling of hereditary conditions, as well as the ethical, legal, and social considerations involved in genetic testing and therapy. Through case studies and current research, students gain a comprehensive understanding of how genetic information influences medical practice and personalized patient care.
Recommended Textbook
Concepts of Genetics 3rd Edition by Robert J. Brooker
Available Study Resources on Quizplus
24 Chapters
913 Verified Questions
913 Flashcards
Source URL: https://quizplus.com/study-set/2386
Page 2
Chapter 1: Overview of Genetics
Available Study Resources on Quizplus for this Chatper
28 Verified Questions
28 Flashcards
Source URL: https://quizplus.com/quiz/47400
Sample Questions
Q1) The traits of an individual organism can be influenced by both genes and the
A) genome
B) environment
C) population size
D) genetic variation within a population
Answer: B
Q2) A variation of a gene is called a(n)________.
A) species
B) morph
C) genome
D) allele
E) proteome
Answer: D
Q3) RNA is formed by the process of ________.
A) transcription
B) translation
C) both transcription and translation
Answer: A
To view all questions and flashcards with answers, click on the resource link above.
Page 3
Chapter 2: Reproduction and Chromosome Transmission
Available Study Resources on Quizplus for this Chatper
41 Verified Questions
41 Flashcards
Source URL: https://quizplus.com/quiz/47401
Sample Questions
Q1) A bivalent contains how many sister chromatids?
A) 2
B) 4
C) 8
D) depends on the cell
Answer: B
Q2) Which of the following would contain genetic material that is 100% identical?
A) homologous chromosomes
B) sister chromatids
C) X and Y chromosomes
D) All of these choices are identical.
Answer: B
Q3) During sexual reproduction,each parent contributes one set of chromosomes.Similar chromosomes from each parent are called ________.
A) karyotypes
B) sister chromatids
C) homologs
D) sex chromosomes
Answer: C
To view all questions and flashcards with answers, click on the resource link above.
Page 4
Chapter 3: Mendelian Inheritance
Available Study Resources on Quizplus for this Chatper
49 Verified Questions
49 Flashcards
Source URL: https://quizplus.com/quiz/47402
Sample Questions
Q1) Differences in plant characteristics such as flower color or height are called variants or traits.
A)True
B)False
Answer: True
Q2) Mendel's work on inheritance had an immediate influence on the scientific community and theories of inheritance.
A)True
B)False
Answer: False
Q3) Which of the following would be used to determine the probability of three independent events in order?
A) sum rule
B) product rule
C) chi square test
D) binomial expansion
E) random sampling error
Answer: B
To view all questions and flashcards with answers, click on the resource link above.
Page 5
Chapter 4: Sex Determination and Sex Chromosomes
Available Study Resources on Quizplus for this Chatper
25 Verified Questions
25 Flashcards
Source URL: https://quizplus.com/quiz/47403
Sample Questions
Q1) Red-green colorblindness is a X-linked recessive trait in humans.If a woman who is a carrier for red-green colorblindness marries a normal male,what percent of their sons will be colorblind?
A) 100%
B) 50%
C) 25%
D) 0%
Q2) Sex determination in humans and Drosophila is similar in the fact that
A) the ratio of X chromosomes to sets of autosomes determines maleness or femaleness in both.
B) males in both will always have one Y chromosome, whereas females will not have a Y chromosome.
C) females lack X chromosomes.
D) males have one X chromosome and females have two X chromosomes.
Q3) The coat color of calico cats is a result of ________.
A) maternal inheritance
B) X-inactivation
C) imprinting
D) extra nuclear inheritance
To view all questions and flashcards with answers, click on the resource link above. Page 6
Chapter 5: Extensions of Mendelian Inheritance
Available Study Resources on Quizplus for this Chatper
40 Verified Questions
40 Flashcards
Source URL: https://quizplus.com/quiz/47404
Sample Questions
Q1) In a dihybrid cross of two heterozygous individuals,you expect a 9:3:3:1 phenotypic ratio in the offspring,but observe a ratio of 9:7.What is the most likely explanation?
A) codominace
B) a sex-limited trait
C) simple Mendelian inheritance
D) incomplete penetrance
E) epistatic interactions of the two genes
Q2) Typically,a recessive allele increases the expression of a functional protein.
A)True
B)False
Q3) The coat characteristics of Siamese cats and Himalayan rabbits,where proteins in the extremities function differently than in other parts of the body,is an example of
A) incomplete dominance
B) multiple allele systems
C) semilethal alleles
D) temperature-sensitive allele
To view all questions and flashcards with answers, click on the resource link above. Page 7
Chapter 6: Extranuclear Inheritance, Imprinting, and Maternal Effect
Available Study Resources on Quizplus for this Chatper
36 Verified Questions
36 Flashcards
Source URL: https://quizplus.com/quiz/47405
Sample Questions
Q1) What is thought to be the origin of mitochondria and chloroplasts?
A) cyan bacteria/purple bacteria
B) purple bacteria/fungus
C) purple bacteria/cyanobacteria
D) algae/cyanobacteria
Q2) The inheritance of leaf pigmentation in the four-o'clock plant Mirabilis jalapa is an example of ________.
A) maternal effect
B) maternal inheritance
C) epigenic inheritance
D) imprinting
Q3) An example of genomic imprinting is
A) Leber hereditary optic neuropathy.
B) neurogenic muscle weakness.
C) snail coiling in water snails.
D) Angelman Syndrome.
E) bicoid gene in Drosophila.
Q4) Both parents usually imprint the same gene.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 8
Chapter 7: Genetic Linkage and Mapping in Eukaryotes
Available Study Resources on Quizplus for this Chatper
32 Verified Questions
32 Flashcards
Source URL: https://quizplus.com/quiz/47406
Sample Questions
Q1) A testcross is always performed between the individual that is heterozygous for the genes to be mapped and an individual who is ________.
A) heterozygous for the genes
B) homozygous dominant for the genes
C) homozygous recessive for the genes
D) lacking the genes
Q2) Which of the following defines gene linkage?
A) Two or more genes that are physically connected on a chromosome.
B) Genes that are transmitted to the next generation as a group.
C) The process by which genetic information is exchanged between homologous chromosomes.
D) All of these choices are correct.
E) Both two or more genes that are physically connected on a chromosome and genes that are transmitted to the next generation as a group.
Q3) Map distance is the number of recombinant offspring divided by the total number of nonrecombinant offspring.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above.
9
Chapter 8: Variation in Chromosome Structure and Number
Available Study Resources on Quizplus for this Chatper
45 Verified Questions
45 Flashcards
Source URL: https://quizplus.com/quiz/47407
Sample Questions
Q1) Which human cells exhibit endopolyploidy?
A) sex cells
B) nerve cells
C) all somatic cells
D) liver cells
E) red blood cells
Q2) Select the pairs that correctly match an aneuploid condition to its genotype.
A) Edward syndrome - trisomy 18
B) Down syndrome - trisomy 21
C) Jacobs syndrome - XYY
D) Turner syndrome - XXY
E) Klinefelter - XO
Q3) Polytene chromosomes are
A) chromosomes that lack telomeres.
B) chromosomes with high copy number variation.
C) backup copies of chromosomes that are kept segregated away from the functional copies.
D) bundles of hundreds of copies of the same chromosome.
Q4) Visible or measurable characteristics of an organism,resulting from its genotype,are called its ________.
To view all questions and flashcards with answers, click on the resource link above. Page 10
Chapter 9: Genetics in Bacteria
Available Study Resources on Quizplus for this Chatper
44 Verified Questions
44 Flashcards
Source URL: https://quizplus.com/quiz/47408
Sample Questions
Q1) This form of DNA transfer uses a sex pilus to transfer the genetic material.
A) transformation
B) transduction
C) conjugation
D) fission
Q2) How does a transducing phage directly contribute to DNA transfer between bacteria?
A) By injecting a fragment of the bacterial genome from a previous host into another bacterial cell
B) By stimulating the formation of a sex pilus
C) By injecting phage DNA into a living bacterial cell
D) By incorporating DNA fragments from two different bacterial cells so that recombination can occur within the phage
Q3) During homologous recombination,areas of mismatched DNA form structures called a heteroduplex.
A)True
B)False
Q4) The direct movement of DNA between two bacteria is called genetic transfer.
A)True
B)False
Page 11
To view all questions and flashcards with answers, click on the resource link above.
Chapter 10: Genetics of Viruses
Available Study Resources on Quizplus for this Chatper
11 Verified Questions
11 Flashcards
Source URL: https://quizplus.com/quiz/47409
Sample Questions
Q1) The genetic material of HIV is single-stranded RNA.
A)True
B)False
Q2) Which is a property of emerging viruses?
A) mutate frequently
B) recent origin
C) more likely to cause infection compared to other strains
D) all of these
Q3) Most biologists consider viruses to be living organisms,which are classified with the bacteria.
A)True
B)False
Q4) Which virus uses reverse transcriptase in its reproductive cycle?
A) HIV
B) Phage lamda
C) Both of the viruses use reverse transcriptase
D) Neither of the viruses use reverse transcriptase
To view all questions and flashcards with answers, click on the resource link above.
12
Chapter 11: Molecular Structure of DNA and RNA
Available Study Resources on Quizplus for this Chatper
38 Verified Questions
38 Flashcards
Source URL: https://quizplus.com/quiz/47410
Sample Questions
Q1) According to Chargaff's rule,if the DNA of a species contains 20% adenine,what percent of guanine will it contain?
A) 20%
B) 30%
C) 50%
D) 75%
Q2) A purine on one strand of the DNA is always paired with a pyrimidine on the other strand.
A)True
B)False
Q3) What form of DNA is most common in living organisms?
A) A DNA
B) B DNA
C) Z DNA
D) R DNA
Q4) DNA differs from RNA in which way?
A) the structure of the nucleotide
B) the five-carbon sugar it uses
C) the size of the phosphate groups
D) the number of bases attached to the sugar
Page 13
To view all questions and flashcards with answers, click on the resource link above.
Chapter 12: Molecular Structure of Chromosomes and Transposition
Available Study Resources on Quizplus for this Chatper
40 Verified Questions
40 Flashcards
Source URL: https://quizplus.com/quiz/47411
Sample Questions
Q1) The majority of the nonrepetitive genes in an organism are found in which of the following?
A) unique sequences
B) moderately repetitive sequences
C) highly repetitive sequences
D) None of these choices are correct.
Q2) Overwinding of the DNA decreases the number of turns in the double helix,and thus results in supercoils in the DNA.
A)True
B)False
Q3) To date,there are no indications that transposable elements offer a selective advantage to a species.
A)True
B)False
Q4) Transposons that use an RNA intermediate for transposition are called ________.
A) R elements
B) RNAi transposons
C) retrotransposons
D) reverse transposons
To view all questions and flashcards with answers, click on the resource link above. Page 14
Chapter 13: Dna Replication and Recombination
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/47412
Sample Questions
Q1) What process does the Holliday model help explain?
A) recombination between homologous chromosomes
B) recombination between sister chromatids
C) the creation of shortened chromosomes
D) replication initiation
Q2) DNA polymerase III has the ability to begin synthesis of the new daughter strands immediately following the formation of the replication fork.
A)True
B)False
Q3) What enzyme relaxes supercoiling ahead of the replication fork?
A) DNA ligase
B) DNA primase
C) topoisomerase
D) DNA polymerase I
E) DNA polymerase III
Q4) A primosome consists of a polymerase and a single-stranded binding protein.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above.
15
Chapter 14: Gene Transcription and RNA Modification
Available Study Resources on Quizplus for this Chatper
42 Verified Questions
42 Flashcards
Source URL: https://quizplus.com/quiz/47413
Sample Questions
Q1) In transcription,the closed complex consists of
A) RNA polymerase.
B) transcription factors.
C) double-stranded DNA.
D) single-stranded DNA.
Q2) Which of the following is not an example of a eukaryotic regulatory element?
A) enhancers
B) silencers
C) core promoters
D) cis-acting elements
E) All of the answers are examples.
Q3) Select the eukaryotic regulatory elements.
A) enhancers
B) silencers
C) cis-acting elements
D) Pribnow box
Q4) The Prinbow box contains a CACAAC consensus sequence located in the 100 region of the promoter.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 16
Chapter 15: Translation of MRNA
Available Study Resources on Quizplus for this Chatper
51 Verified Questions
51 Flashcards
Source URL: https://quizplus.com/quiz/47414
Sample Questions
Q1) Which component of the ribosome is able to detect when the wrong tRNA has inserted into the A site?
A) 16S rRNA
B) P site
C) Shine-Dalgarno sequence
D) snRNA
E) aminoacyl-tRNA synthetase
F) 23S rRNA
Q2) The one-gene,one-enzyme hypothesis was first proposed by Beadle and Tatum.
A)True
B)False
Q3) Mitochondria import their ribosomes from the pool of ribosomes in the cytoplasm.
A)True
B)False
Q4) What site on the ribosome is primarily responsible for holding the growing polypeptide?
A) A
B) E
C) P
To view all questions and flashcards with answers, click on the resource link above. Page 17
Chapter 16: Gene Regulation in Bacteria
Available Study Resources on Quizplus for this Chatper
37 Verified Questions
37 Flashcards
Source URL: https://quizplus.com/quiz/47415
Sample Questions
Q1) Translational regulatory proteins recognize specific areas of what molecule?
A) tRNA
B) Ribosome
C) rRNA
D) mRNA
E) None of the answers are correct.
Q2) How many promoters are in an operon?
A) 1
B) 2
C) 3
D) It depends on how many genes there are in the operon.
Q3) Riboswitches have been shown to have regulation of ________.
A) transcription and translation
B) only transcription
C) only translation
D) only RNA splicing
Q4) Negative transcriptional regulation is conducted by activator proteins.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 18
Chapter 17: Gene Regulation in Eukaryotes
Available Study Resources on Quizplus for this Chatper
55 Verified Questions
55 Flashcards
Source URL: https://quizplus.com/quiz/181990
Sample Questions
Q1) A common way of studying methylation in cells is to sequence DNA samples before and after modification with sodium bisulfite. The sodium bisulfite deaminates Cytosine residues,generating Uracil residues,therefore resulting in a change in the sequence as compared to the nonmodified DNA. Sodium bisulfite does not react with 5-methylcytosine so there will be no change in the sequence of those modified bases. When tumors are sequenced to study methylation patterns and epigenetic control,what would be the best control for sequencing using this technique?
A) Noncancerous tissue DNA from a different individual but from the same organ
B) Liver DNA from the same individual that the cancer sample is from
C) DNA from noncancerous tissue from the same individual's organ as the cancer
D) A combination of DNA from liver, brain and muscle from the same individual that has the cancer
Q2) Which of the following is part of the mechanism for epigenetic regulation of the Igf2 gene?
A) Methylation of the H19 locus
B) Methylation of the ICR and DMR domains
C) Binding of CTC factors to methylated sequences
To view all questions and flashcards with answers, click on the resource link above. Page 19
Chapter 18: Non-Coding Rnas
Available Study Resources on Quizplus for this Chatper
24 Verified Questions
24 Flashcards
Source URL: https://quizplus.com/quiz/181991
Sample Questions
Q1) Select the ways in which modifications to the chromatin brought about by HOTAIR and associated proteins are proposed to inhibit transcription.
A) Direct inhibition of RNA polymerase binding
B) Attraction of other chromatin-modifying enzymes
C) Formation of a double-stranded RNA structure between HOTAIR and the mRNA preventing translation
D) Recruitment of repressors to the DNA
Q2) What is the make up of the bacterial and eukaryotic SRP,respectively?
A) Bacterial: 1 ncRNA, 1 protein; Eukaryotic: 1 ncRNA, 6 proteins
B) Bacterial: 1 ncRNA, 1 protein; Eukaryotic: 6 ncRNAs, 1 protein
C) Bacterial: 1 ncRNA, 6 proteins; Eukaryotic: 1 ncRNA, 6 proteins
D) Bacterial: 6 ncRNAs, 1 protein; Eukaryotic: 1 ncRNA, 1 protein
Q3) The CRISPR-Cas system in bacteria is most similar to what system in vertebrates?
A) Immune system
B) Circulatory system
C) Nervous system
D) Digestive system
To view all questions and flashcards with answers, click on the resource link above.
Page 20
Chapter 19: Gene Mutation and DNA Repair
Available Study Resources on Quizplus for this Chatper
43 Verified Questions
43 Flashcards
Source URL: https://quizplus.com/quiz/47418
Sample Questions
Q1) The complete loss of either a guanine or adenine from DNA is an example of
A) depurination
B) tautomeric shifts
C) deamination
D) None of the answers are correct.
Q2) A temporary change in the structure of a nitrogenous base is called ________.
A) depurination
B) a tautomeric shift
C) deamination
D) None of the answers are correct.
Q3) Mutagens change the structure of DNA,which may lead to mutations.
A)True
B)False
Q4) The conversion of cytosine to uracil in DNA is an example of ________.
A) depurination
B) tautomeric shifts
C) deamination
D) None of the answers are correct.
To view all questions and flashcards with answers, click on the resource link above. Page 21
Chapter 20: Molecular Technologies
Available Study Resources on Quizplus for this Chatper
47 Verified Questions
47 Flashcards
Source URL: https://quizplus.com/quiz/47419
Sample Questions
Q1) What is the purpose of RNaseH in the making of cDNA?
A) It copies the RNA into a complementary DNA strand.
B) It reforms the sugar-phosphate backbone.
C) It generates short RNAs that are used as primers.
D) It proofreads the cDNA for errors.
Q2) What occurs during the annealing stage of a PCR reaction?
A) The DNA strands separate
B) The DNA polymerase copies the template DNA.
C) The primers bind to the template DNA.
D) The reaction stops.
Q3) Bone marrow transplants typically use what type of cells?
A) embryonic stem cells
B) embryonic germ cells
C) hematopoietic stem cells
D) None of the answers are correct.
Q4) Since cDNA is made from RNA,it lacks introns and contains only the coding sequence for the functional protein.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 22
Chapter 21: Genomics
Available Study Resources on Quizplus for this Chatper
34 Verified Questions
34 Flashcards
Source URL: https://quizplus.com/quiz/47420
Sample Questions
Q1) A researcher isolates mRNA from healthy and diseased liver biopsies. Each mRNA sample is converted into cDNA and subjected to next-generation sequencing.Select all statements that describe this experiment and the possible results.
A) The researcher can identify transcripts that are more abundant in healthy liver than in diseased liver, which are candidate genes for further study.
B) The researcher can identify transcripts that are less abundant in healthy liver than in diseased liver, which are candidate genes for further study.
C) This is an RNA-Seq experiment.
D) This is a DNA microarray analysis.
E) Some genes' transcripts may be present in both samples but have different splice forms in healthy and diseased liver.
Q2) What is in situ hybridization used for?
A) cytogenetic mapping
B) physical mapping
C) linkage mapping
D) sequencing
To view all questions and flashcards with answers, click on the resource link above.
23
Chapter 22: Medical Genetics and Cancer
Available Study Resources on Quizplus for this Chatper
25 Verified Questions
25 Flashcards
Source URL: https://quizplus.com/quiz/47421
Sample Questions
Q1) In the analysis of a family,you notice that males are more likely to contract a certain disease,and the daughters of affected males produce 50% of their sons affected with the disease.This disease is displaying which of the following patterns of inheritance?
A) X-linked recessive
B) autosomal recessive
C) autosomal dominant
D) None of these choices are correct.
Q2) A gene that promotes the development of cancer when it sustains a gain-of-function mutation is called a
A) housekeeping gene.
B) tumor suppressor gene.
C) proto-oncogene.
D) caretaker gene.
Q3) Epigenetics may play a role in cancer by
A) causing a change in gene expression patterns.
B) directly inducing inversion mutations.
C) directly resulting in gene deletions.
D) causing translocations.
To view all questions and flashcards with answers, click on the resource link above.
24
Chapter 23: Population Genetics
Available Study Resources on Quizplus for this Chatper
39 Verified Questions
39 Flashcards
Source URL: https://quizplus.com/quiz/47422
Sample Questions
Q1) Which type of selection would lead to two distinct phenotypes?
A) stabilizing selection
B) phenotype selection
C) fitness selection
D) disruptive selection
E) directional selection
Q2) Consider a hypothetical gene B for which there are two alleles in the population.For every ten BB individuals that survive,six Bb individuals survive,and one bb individual survives.What are the relative fitness values for each genotype?
A) wBB = 1.0; wBb = 0.6; wbb = 0.1
B) wBB = 100; wBb = 0.6; wbb = 0.01
C) wBB = 0.59; wBb = 0.35; wbb = 1.0
D) wB = 26; wb = 7
Q3) Which of the following is NOT an assumption of the Hardy-Weinberg equation?
A) The population is large.
B) There is no migration into or out of the population.
C) There is no selection against a given genotype.
D) There is no mutation in the gene being studied.
E) There is nonrandom mating.
To view all questions and flashcards with answers, click on the resource link above.
Page 25
Chapter 24: Quantitative Genetics
Available Study Resources on Quizplus for this Chatper
33 Verified Questions
33 Flashcards
Source URL: https://quizplus.com/quiz/47423
Sample Questions
Q1) A trait that varies measurably in a species is called a discontinuous trait.
A)True
B)False
Q2) Which of the following best describes the degrees of freedom for the calculation of variance?
A) (n + 1)
B) 2(n + 1)
C) (n - 1)/n
D) (n - 1)
Q3) Inbreeding reduces which of the following variances to near zero?
A) genetic variance
B) environmental variance
C) both variances
D) neither variance
Q4) If a completely inbred population shows phenotypic variance,then that variance is caused by environmental effects.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 26