1:   Leptotene chromosomes have
Options:
  1. Two chromatids
  2. One chromatid
  3. Four chromatids
  4. No chromatid

Answer: Option 1

Explanation:

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2:   DNA is an acidic substance present in nucleus was first identified by whom?
Options:
  1. Friedrich meischer
  2. James Watson
  3. Rosalind franklin
  4. Francis crick

Answer: Option 1

Explanation:

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3:   In which year James Watson and Francis crick propose a model for DNA molecule ?
Options:
  1. 1950
  2. 1953
  3. 1960
  4. 1973

Answer: Option 2

Explanation:

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4:   In DNA nucleotide is linked with which bond
Options:
  1. Co-ordinate bond
  2. Covalent bond
  3. Polar covalent bond
  4. Hydrogen bond

Answer: Option 2

Explanation:

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5:   In DNA, the bases are divided into how many groups?
Options:
  1. 2
  2. 3
  3. 4
  4. 5

Answer: Option 1

Explanation:

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6:   DNA consist of how many bases?
Options:
  1. 2
  2. 4
  3. 6
  4. 8

Answer: Option 2

Explanation:

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7:   The double helix structure of DNA is held together by which bond?
Options:
  1. Nuclear bond
  2. Hydrogen bond
  3. Carbonic bond
  4. Nonebof above

Answer: Option 2

Explanation:

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8:   Which of the following structure of DNA is a double helix structure?
Options:
  1. Primary
  2. Secondary
  3. Tertiary
  4. Allbof above

Answer: Option 2

Explanation:

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9:   Which of the following is a component of DNA nucleotide?
Options:
  1. Base
  2. Sugar
  3. Phosphate
  4. All of above

Answer: Option 4

Explanation:

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10:   How many components are there in DNA nucleotide?
Options:
  1. 2
  2. 3
  3. 4
  4. 5

Answer: Option 2

Explanation:

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