Biology Mcqs XI [Chromosomes and Dna] Online Test 4

Biology Mcqs XII [Chromosomes and Dna] MCQS Online Test - 4

Biology Aptitude Test. 10 Questions from Chapter # 20 Chromosomes and Dna

Q1. The first stage of gene expression is

• Transcription
• Transformation
• Translation
• Transduction
• Translocation

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Q2. The second stage of gene expression in which mRNA-directed polypeptide synthesis by ribosomes takes place is:

• Transcription
• Transformation
• Translation
• Transduction
• Translocation

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Q3. “Start Codon” is:

• UAG
• UAA
• UGA
• UGG
• AUG

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Q4. If a small segment of chromosome may be missing, a situation called:

• Deletion
• Duplication
• Diversion
• Translocation
• Inversion

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Q5. If a part of chromosome be present in excess to the normal chromosome, a condition called:

• Deletion
• Duplication
• Diversion
• Translocation
• Inversion

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Q6. The transfer of segment of chromosome to a non-homologous chromosome is called:

• Deletion
• Duplication
• Transformation
• Translocation
• Inversion

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Q7. Reduce crossing over is present in:

• Translocation
• Inversion
• Deletion
• Duplication
• Transformation

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Q8. The DNA get damage by all except:

• X-rays
• Gamma rays
• Free redical
• Ultraviolet rays
• Ultrasonic rays

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Q9. Heritable blood disorder due to presence of defective Hemoglobin molecule is:

• Hemophilia
• Thalassemia
• Thrombocytopenia
• Sickle Cell Anaemia
• Polycythemia

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Q10. Hereditary condition in which the affected individuals are unable to break down the amino acid phenylanaline is:

• Homocystinuria
• Alkaptonuria
• Phenylketonuria
• Hemoglobinuria
• Uricosuria

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Chromosomes and Dna Test - 5

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