Biology MCQs with Answers | Biology Multiple Choice Questions and Answers

  3. biology multiple choice questions(mcqs) and answers for class 12
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Questions
1 The term 'gene' was first used by
A Johannsen
B Mendel
C Lemark
D Cuvier

Answer: Option [A]
2 Wilkins X-ray diffraction showed the diameter of the DNA helix as
A 10A
B 20A
C 30A
D 40A

Answer: Option [B]
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3 The number of autosomes in man is
A 22 pairs
B 11 pairs
C 43 pairs
D 23 pairs

Answer: Option [A]
4 A normal metaphase chromosome with a midial centromere is:
A metacentric
B sub-metacentric
C acrocentric
D telocentric

Answer: Option [A]
5 Lampbrush chromosomes are found inside
A Salvary glands of Drosophila
B Salvary gland of silk moth
C Oocytes of frog
D Nucleus of man

Answer: Option [C]

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