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Molecular Basis of Inheritance · Question 101

NEET 2013 (Karnataka)MCQEasy📈 Topic in 25% papers+4−1
1

One of the most frequently used techniques in DNA fingerprinting is :-

  1. SSCP
  2. SCAR
  3. VNTR
  4. AFLP

Answer

(3) VNTR

Solution

As per NCERT, DNA fingerprinting (developed by Alec Jeffreys) uses a satellite DNA as probe that shows a very high degree of polymorphism, called Variable Number of Tandem Repeats (VNTR).

⇒ The number of repeats in a VNTR differs from person to person, so after hybridisation with the VNTR probe each individual gives a different band pattern.

∴ VNTR is the technique most frequently used in DNA fingerprinting.

Answer: (3)

NEET 2013 (Karnataka)

Keep practising — Molecular Basis of Inheritance

2

Read the following four statements (A-D) : How many of the above statements are right ?

  1. Four
  2. Two
  3. Three
  4. One
AIPMT 2012 (Mains)
3

What is it that forms the basis of DNA Fingerprinting ?

  1. The relative proportions of purines and pyrimidines in DNA
  2. The relative amount of DNA in the ridges and grooves of the fingerprints
  3. The relative difference in the DNA occurrence in blood, skin and saliva
  4. Satellite DNA occurring as highly repeated short DNA segments
AIPMT 2012 (Mains)
4

Removal of introns and joining of exons in a defined order during transcription is called

  1. Looping
  2. Inducing
  3. Slicing
  4. Splicing
AIPMT 2012 (Prelims)
5

If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complementary RNA strand sequence

  1. ATCGU
  2. UAGAC
  3. AACTG
  4. TTAGU
AIPMT 2012 (Prelims)
6

Which one of the following is not a part of a transcription unit in DNA ?

  1. The structural gene
  2. The inducer
  3. A terminator
  4. A promoter
AIPMT 2012 (Prelims)
7

Removal of RNA polymerase-III from nucleoplasm will affect the synthesis of

  1. tRNA
  2. hnRNA
  3. rRNA
  4. mRNA
AIPMT 2012 (Prelims)
8

PCR and Restriction Fragment Length Polymorphism are the methods for

  1. Genetic transformation
  2. Genetic fingerprinting
  3. Study of enzymes
  4. DNA sequencing
AIPMT 2012 (Prelims)
9

The unequivocal proof of DNA as the genetic material came from the studies on a:

  1. Viroid
  2. Bacterium
  3. Fungus
  4. Bacterial virus
AIPMT 2011 (Mains)
10

Which one of the following also acts as a catalyst in a bacterial cell?

  1. 5S rRNA
  2. snRNA
  3. hnRNA
  4. 23S rRNA
AIPMT 2011 (Prelims)
11

What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under electron microscope ?

  1. Nucleosomes
  2. Genes
  3. Nucleotides
  4. Base pairs
AIPMT 2011 (Prelims)

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