Molecular Human Genetics
This quiz tests knowledge of molecular genetic mechanisms including mutation types, DNA damage and repair, genetic disorders, and nucleic acid metabolism in human genetics.
Questions
Mrs. Verma is a diabetic patient for the past three years. Diabetes is an example of which of the following disorders?
- Chromosomal disease
- Single-gene disorder
- Multifactorial disorder
- Mitochondrial disorder
- Trinucleotide repeat disorder
Which of the following genetic disorders is a sex linked disease?
- Sickle-cell anemia
- Haemophilia
- Cystic fibrosis
- Tay-Sachs disease
- Huntington’s disease
Scaffold proteins are crucial regulators of many key signaling pathways. The products of which of the following genes may play a role as scaffolding protein at cell–cell junctions?
- BAIAP2 gene
- MAGI1 gene
- MAGI2 gene
- RERE gene
- WWP2 gene
Which of the following processes is a DNA damage tolerance process?
- Tautomerism
- Depurination
- Deamination
- Slipped strand mispairing
- Translesion synthesis
Which of the following types of mutation is most likely to lead to premature termination of translation?
- Insertion of a single base into DNA
- Deletion of three bases from DNA
- Deletion of an entire gene
- Single base change in a promoter
- Exon skip
The Huntington's disease mutation is genetically dominant, because either of a person's HTT genes being mutated causes the disease. CAG/CTG repeat expansions at the Huntington's disease is associated with which of the following genes?
- JPH3 gene
- ACSF3 gene
- ACD gene
- AMFR gene
- CYLD gene
Which of the following is most likely to be a conservative mutation?
- CAA to TAA
- CCT to GCT
- ATC to GTC
- ATA to AAA
- CGA to TGA
Which of the following types of mutations is most likely to result from UV exposure?
- Thymidine dimer
- Chromosome breakage
- Frameshift mutation
- Nonsense mutations
- Chromosome inversion
A cDNA library contains clones representing which of the following?
- Micro RNA (miRNA)
- mRNA
- Genomic DNA
- Exon
- Introns
Which of the following repeated sequences includes an open reading frame for reverse transcriptase?
- Segmental duplication
- SINE
- LINE
- DNA transposon
- Variable number tandem repeat
Homologous repeats are involved in which of the following types of mutations?
- Missense mutations
- Splice-site mutations
- Large deletions
- Frameshifts
- Nonsense mutation
Which of the following nucleic acids is an intermediate in the metabolism of deoxyribonucleotides?
- Deoxyadenosine diphosphate
- Deoxycytidine diphosphate
- Deoxycytidine monophosphate
- Deoxyuridine monophosphate
- Deoxyguanosine
Which of the following is an antibiotic compound which inhibits nucleic acid biosynthesis in a living cell?
- Aganirsen
- Spiegelmer
- Phosphocreatine
- Pluramycin A
- Aminoallyl nucleotide
Which of the following types of RNA is included in the splicosome?
- snRNA
- miRNA
- tRNA
- rRNA
- siRNA