21. A gene that takes part in the synthesis of polypeptide is
a. Structural gene
b. Regulator gene
c. Operator gene
d. Promoter gene
Ans: A
22. DNA replicates during
a. G1 – phase
b. S – phase
c. G2 – phase
d. M – phase
Ans: B
23. A human cell containing 22 autosome and a ‘Y’ chromosome is probably a
a. Male somatic cell
b. Zygote
c. Female somatic cell
d. Sperm cell
Ans: B
24. Crossing-over most commonly occurs during
a. Prophase I
b. Prophase II
c. Anaphase I
d. Telophase II
Ans: A
25. DNA-replication is by the mechanism of
a. Conservative
b. Semiconservative
c. Dispersive
d. None of the above
Ans: B
26. Production of RNA from DNA is called
a. Translation
b. RNA splicing
c. Transcription
d. Transposition
Ans: C
27. Nucleic acids contain
a. Alanine
b. Adenine
c. Lysine
d. Arginine
Ans: B
28. What are the structural units of nucleic acids?
a. N-bases
b. Nucleosides
c. Nucleotides
d. Histones
Ans: C
29. The most important function of a gene is to synthesize
a. Enzymes
b. Hormones
c. RNA
d. DNA
Ans: A
30. One of the genes present exclusively on the X-chromosome in humans is concerned with
a. Baldness
b. Red-green colour baldness
c. Facial hair/moustache in males
d. Night blindness
Ans: B
More Questions & Answers:-
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a. Structural gene
b. Regulator gene
c. Operator gene
d. Promoter gene
Ans: A
22. DNA replicates during
a. G1 – phase
b. S – phase
c. G2 – phase
d. M – phase
Ans: B
23. A human cell containing 22 autosome and a ‘Y’ chromosome is probably a
a. Male somatic cell
b. Zygote
c. Female somatic cell
d. Sperm cell
Ans: B
24. Crossing-over most commonly occurs during
a. Prophase I
b. Prophase II
c. Anaphase I
d. Telophase II
Ans: A
25. DNA-replication is by the mechanism of
a. Conservative
b. Semiconservative
c. Dispersive
d. None of the above
Ans: B
26. Production of RNA from DNA is called
a. Translation
b. RNA splicing
c. Transcription
d. Transposition
Ans: C
27. Nucleic acids contain
a. Alanine
b. Adenine
c. Lysine
d. Arginine
Ans: B
28. What are the structural units of nucleic acids?
a. N-bases
b. Nucleosides
c. Nucleotides
d. Histones
Ans: C
29. The most important function of a gene is to synthesize
a. Enzymes
b. Hormones
c. RNA
d. DNA
Ans: A
30. One of the genes present exclusively on the X-chromosome in humans is concerned with
a. Baldness
b. Red-green colour baldness
c. Facial hair/moustache in males
d. Night blindness
Ans: B
More Questions & Answers:-
Page1 Page2 Page3 Page4 Page5 Page6
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