20th Chapter

12th Class Biology Chapter 20 Test

Here you can prepare 12th Class Biology Chapter 20 Chromosomes and DNA Test. Click the button for 100% free full practice test.

Second Year Biology Chapter 20 Online MCQ Test for 2nd Year Biology Chapter 20 Chromosomes and DNA Preparation

This online test contains MCQs about following topics:.

- Types of Chromosomes - Composition of Chromosome - The Chromosomal Theory of Inheritance - DNA as Hereditary Material - What is a Gene - Cells Use RNA to Make Protein - Mutations

FSC Part 2 Biology Ch 20 Test
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Second Year Biology Chapter 20 Online MCQ Test for 2nd Year Biology Chapter 20 Chromosomes and DNA Preparation

Sr. # Questions Answers Choice
1 Okazaki fragments are about 1000 - 2000 nucleotides long in
  • A. Prokaryotes
  • B. Eukaryotes
  • C. Both a & b
  • D. None of these
2 In 1944 Oswald Avery along with Colin Macleod and Maclyn McCarty repeated experiments of
  • A. Lamarck
  • B. Griffith
  • C. Darwin
  • D. Spemann
3 A gene with initiation codon, which encodes the amino acid methionine is.
  • A. UAA
  • B. UAG
  • C. AUG
  • D. UGG
4 Histones are positively charged due to an abundance of the basic amino acids
  • A. Arginine
  • B. Lysine
  • C. Both a & c
  • D. Alanine
5 Adenine and guanine are called
  • A. Purines
  • B. Pyrmidines
  • C. Both a & b
  • D. None of these
6 The base pairs in human genome are.
  • A. Two billion
  • B. Three billion
  • C. Four billion
  • D. Five billion
7 A chromosome with equal length of its arms.
  • A. <br>Acrocentric
  • B. Metacentric
  • C. sub meta centric
  • D. Telocentric
8 Innate behavior is all but;
  • A. Heritable
  • B. Intrinsic
  • C. Sterotypic
  • D. Flexible
9 Innate behavior is all except;
  • A. Coded in DNA
  • B. Modified in individuals life span
  • C. Modified with species evolution
  • D. Programmed responses to external stimuli
10 Each Okazaki fragment is synthesized by.
  • A. RNA Polymerase
  • B. DNA polymerase
  • C. DNA polymerase I
  • D. DNA polymerase III

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  • Aqeel Abbas Aqeel Abbas

    27 May 2022

    کا

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    Hi

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    10 Dec 2016

    great opportunity to become something

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