Human Genetics

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15 Questions Published

Questions

Question 1 Multiple Choice (Single Answer)

Which of the following statements regarding DNA footprinting procedure is incorrect?

  1. DNA fragment thought to contain protein binding sequence is extracted, amplified and labelled at both the ends of DNA.
  2. Protein has protected the DNA binding site from cleavage agent.
  3. DNA fragments are separated by polyacrylamide gel electrophoresis.
  4. The missing band indicates the protein binding specific DNA sequence.
  5. The labelled DNA fragments are mixed with cleavage agents without DNA binding protein.
Question 2 Multiple Choice (Single Answer)

The pseudogenes can interfere with the PCR and in situ hybridisation experiments. Which of the following statements regarding the pseudogenes is FALSE?

  1. Exact mapping of the pseudogenes onto chromosomes is extremely difficult.
  2. The absolute rate of mutation is lower in nucleus than the one occurring in mitochondria.
  3. They form a molecular record of the evolutionary history and statistics of the parental genome.
  4. They are also useful to find the rate of nucleotide substitutions, DNA loss, etc.
  5. Multiple pseudogenes of the same sequence are found in human genes.
Question 3 Multiple Choice (Single Answer)

Which of the following markers used in DNA fingerprinting of plants show high level of polymorphism and are reproducible also?

  1. Sequence characterised amplified region (SCAR)
  2. Single Nucleotide Polymorphism (SNPs)
  3. Expressed Sequence Tags (ESTs)
  4. Inter-simple sequence repeat (ISSR)
  5. Minisatellites
Question 4 Multiple Choice (Single Answer)

A vast range of specific protein-DNA interactions occur due to the unique and major motifs. Which of the following listed motifs includes lactose repressors and cyclic AMP catabolite activator protein?

  1. Leucine Zipper Motif
  2. Zinc Finger Motif
  3. Helix-Turn-Helix Motif
  4. Helix-Loop-Helix Motif
  5. BLAST
Question 5 Multiple Choice (Single Answer)

A single nucleotide polymorphism is a variation, at a single position in a DNA sequence among individuals. Which of the following techniques of epigenetics is used to find the single nucleotide polymorphism?

  1. Direct sequencing
  2. Pyrosequencing
  3. Methylation-sensitive single-strand conformation analysis (MS-SSCA)
  4. High resolution melting analysis (HRM)
  5. Methylation-sensitive single-nucleotide primer extension (MS-SnuPE)
Question 6 Multiple Choice (Single Answer)

In which of the folowing mutations the two chromosomes interchange their chromosome segments leading to certain disorders?

  1. Translocations
  2. Duplications
  3. Inversions
  4. Deletion
  5. Aneuploidy
Question 7 Multiple Choice (Single Answer)

The novel coronary artery disease risk gene loci, mainly comprises of the following chromosomes, GenevZNF259 communicates mitogenic signals from the cytoplasm to the nucleus. It is associated with

  1. Chromosome 1p32.2
  2. Chromosome 7q32.3
  3. Chromosome 9q34.2
  4. Chromosome 11q23.3
  5. Chromosome 15q25.1
Question 8 Multiple Choice (Single Answer)

Which of the following statements does NOT characterise RNA editing in both plants and animals?

  1. After editing, all amino acids at the number 228 position are converted to cysteine.
  2. The RNA editing events occur at random in the transcript.
  3. The primary benefit of RNA editing could be evolutionary conservation of protein structure.
  4. Plant mitochondria do not use the universal genetic code.
  5. Editing converts a tryptophan codon to methionine codon.
Question 9 Multiple Choice (Single Answer)

Which of the following genetic disorders occurs due to the swapping over of genetic material between chromosomes?

  1. 46, XX
  2. 48, XXYY syndrome
  3. 47, XYY syndrome
  4. Y chromosome infertility
  5. 47, XXY
Question 10 Multiple Choice (Single Answer)

Which of the following genetic disorders is expressed in heterozygotic condition in humans?

  1. Congenital Ichthyosis
  2. Cystic Fibrosis
  3. Tay-Sachs Disease
  4. Brachydactyly
  5. Sickle Cell Anemia
Question 11 Multiple Choice (Single Answer)

There are certain mechanisms involved in the origin of new genes. Which of the following mechanisms occurs between the genomes of the cell organelles like mitochondria, chloroplasts and nuclear genomes?

  1. Gene duplication
  2. De Novo Gene Origination
  3. Gene Fusion and Fison
  4. Transposable Element(TE) protein domestication
  5. Lateral Gene Transfer
Question 12 Multiple Choice (Single Answer)

Which of the following types of mutagenesis is used to introduce multiple mutations into the DNA sequence?

  1. Directed Mutagenesis
  2. Random Mutagenesis
  3. Mismatched Mutagenesis
  4. Cassette Mutagenesis
  5. PCR Mutagenesis
Question 13 Multiple Choice (Single Answer)

Which of the following are derived from hybridisation of parents with dissimilar genomic sets?

  1. Autoallopolyploids
  2. Complete allopolyploids
  3. Segmental allopolyploidy
  4. True polyploids
  5. Neopolyploids
Question 14 Multiple Choice (Single Answer)

There are numerous types of genetic markers. Which of the following has been used to trace the phylogeny of different organisms?

  1. Variable Number Tandem Repeat or VNTR
  2. Single Nucleotide Polymorphism or SNP
  3. Random Amplification of Polymorphic DNA or RAPD
  4. Amplified Fragment Length Polymorphism or AFLP
  5. Short Tandem Repeat or STR
Question 15 Multiple Choice (Single Answer)

DNA damage caused by exogenous agents comes in various forms. Which of the following agents increases the rate of depurination in DNA strands?

  1. UV-B light
  2. UV-A light
  3. Vinyl chloride
  4. Ionising radiation
  5. High tempretures