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Genetics — MCQs

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1. Who is considered the father of Genetics?





2. Which plant did Mendel use in his experiments?





3. The physical appearance of an organism is called:





4. What is the basic unit of heredity?





5. Alternative forms of a gene are called:





6. Homozygous condition means:





7. Heterozygous condition means:





8. The law of segregation was given by:





9. A cross between individuals with one differing trait is:





10. Incomplete dominance is seen in:





11. Who discovered the structure of DNA?





12. DNA is made up of repeating units called:





13. Which nitrogen base pairs with adenine in DNA?





14. Which nitrogen base pairs with adenine in RNA?





15. The law of independent assortment was given by:





16. The total genetic material of an organism is called:





17. Sex-linked inheritance was discovered by:





18. In humans, sex is determined by:





19. Color blindness is an example of:





20. Which is the smallest unit of genetic information?





21. Crossing over occurs during:





22. Who introduced the concept of mutation?





23. The process of making RNA from DNA is called:





24. The process of protein synthesis from RNA is called:





25. Which organelle is known as the site of protein synthesis?





26. The human genome contains how many chromosomes?





27. Mutations in DNA can be caused by:





28. A change in a single base pair in DNA is called:





29. The Human Genome Project was completed in:





30. Sickle cell anemia is caused by:





31. Which type of RNA carries amino acids?





32. Which type of RNA carries genetic code from DNA?





33. Who discovered linkage in genes?





34. Which enzyme unzips DNA during replication?





35. Okazaki fragments are formed on:





36. The three-base sequence on mRNA is called:





37. The three-base sequence on tRNA is called:





38. A gene that masks the effect of another gene is:





39. A recessive allele is expressed when:





40. The study of chromosomes is called:





41. Which technique is used to amplify DNA?





42. Gel electrophoresis separates DNA based on:





43. Which chromosome is called the “sex chromosome”?





44. Down’s syndrome is caused by:





45. Which disease is linked to defective hemoglobin?





46. Which is the universal genetic code start codon?





47. Which bonds hold DNA strands together?





48. Which organelle contains its own DNA?





49. The region of DNA that codes for proteins is called:





50. The technique of transferring genes between organisms is called:





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