DNA And Fingerprinting Test

DNA And Fingerprinting

This is online test 02 for CBSE class 12 Biology Molecular Basis of Inheritance (DNA and fingerprinting).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
DNA fingerprinting involves identifying differences in some specific regions of DNA sequence called repetitive DNA because
  • A
    In these sequence, DNA contain different nitrogenous base
  • B
    The sequence is similar in all individuals
  • C
    Specific regions of DNA have heavy isotopes
  • D
    In these sequences, a small stretch of DNA is repeated many times
    Correct
2
In human beings 99.9% of genome sequence are same in all individuals only 0.1% of genome differ that
  • A
    Make every individual unique in phenotypic appearance
    Correct
  • B
    Make every individual genetically similar
  • C
    Make every individual similar in phenotypic appearance
  • D
    Make genetic variation for evolution
3
Depending on base composition, length of segment and number of repetitive units, the satellite DNA is classified into many categories such as
  • A
    Small satellites and large satellites
  • B
    Mini satellites and mega satellites
  • C
    Mega satellites and artificial satellites
  • D
    Micro satellites and mini satellites
    Correct
4
DNA fingerprinting is the basis of paternity testing in case of dispute because
  • A
    Polymorphisms are same in all male
  • B
    Polymorphs change from generation to generation
  • C
    Polymorphisms are same in all females
  • D
    Polymorphisms are inheritable from parent to children
    Correct
5
The sensitivity of fingerprinting technique has been increased by use of
  • A
    Polymerase chain reaction (PCR)
    Correct
  • B
    VNTR
  • C
    ELISA
  • D
    Repetitive DNA
6
DNA fingerprinting or genetic finger printing is the process of
  • A
    Finding similarities of finger shapes of different individuals
  • B
    Analyzing VNTR samples of DNA obtained from body fluid or cells
    Correct
  • C
    Matching the fingerprint of different persons
  • D
    Comparing the DNA of two individuals
7
Typically DNA content of about 100000 cells or 1microgram is required for fingerprinting. If the sample obtained is less it is increased by
  • A
    Elimination of DNA in cells
  • B
    Transcription of DNA in cells
  • C
    Polymerase chain reaction (PCR) by amplification process
    Correct
  • D
    Translation of DNA in cells
8
Statement I: DNA finger printing is highly reliable method of identification of individual involved in crimes. Statement II: DNA a fingerprinting is a sure method in solving paternity and maternity disputes. Statement III: DNA fingerprinting can be used to cure HIV infection.
  • A
    Statement II and III is correct
  • B
    Statement I and II is correct
    Correct
  • C
    Statement I and III is correct
  • D
    All statements are correct
9
The hybridization of probes having radioactive isotopes with various sequence of nitrogen bases with ssVNTR is called
  • A
    Southern blotting
    Correct
  • B
    Northern blotting
  • C
    Western blotting
  • D
    Eastern blotting
10
Assertion: VNTR of two persons may be similar at certain sites but could be different at other sites. Reason: A child inherits 50% of chromosomes from mother and remaining 50% from father.
  • A
    Both assertion and reason are incorrect
  • B
    Reason does not explain the assertion correctly
  • C
    Assertion and reason both are correct
    Correct
  • D
    Assertion is correct but reason is incorrect