Genetics Important mcq and pyq❤️ Easy Explanation🥳Genetics Questions kaise solve karein🤔

1. Who is known as the father of genetics? A. Darwin B. Mendel C. Morgan D. Watson Answer: B 2. Unit of heredity is called: A. Chromatid B. Chromosome C. Gene D. Allele Answer: C 3. Alternative forms of a gene are known as: A. Locus B. Alleles C. Genotype D. Phenotype Answer: B 4. When two alleles are identical, the condition is: A. Heterozygous B. Homozygous C. Hemizygous D. Nullizygous Answer: B 5. Crossing a hybrid with its recessive parent is called: A. Test cross B. Back cross C. Reciprocal cross D. Monohybrid cross Answer: A 6. Phenotype ratio of monohybrid cross (complete dominance): A. 3:1 B. 1:1 C. 1:2:1 D. 9:3:3:1 Answer: A 7. In incomplete dominance, F2 phenotypic ratio is: A. 9:3:3:1 B. 3:1 C. 1:2:1 D. 2:1 Answer: C 8. Co-dominance is seen in: A. Snapdragon B. ABO blood group C. Rabbits D. Maize Answer: B 9. Universal donor blood group: A. AB B. A C. O D. B Answer: C 10. Sex of child is determined by: A. X chromosome of mother B. Y chromosome of father C. X chromosome of father D. Both parents Answer: B 11. “Genes located on same chromosome” are called: A. Multiple alleles B. Linkage group C. Polygenes D. Pleiotropic genes Answer: B 12. Crossing over occurs during: A. Prophase I B. Metaphase I C. Anaphase II D. Telophase Answer: A 13. Chromosomal mapping is calculated in: A. % B. cM C. bp D. kb Answer: B (centiMorgan) 14. A trait controlled by many genes is called: A. Pleiotropy B. Polygenic inheritance C. Epistasis D. Codominance Answer: B 15. Skin colour in humans shows: A. Monogenic trait B. Polygenic inheritance C. Codominance D. Epistasis Answer: B 16. Which is an example of epistasis? A. AB blood group B. Coat colour in mice C. Pink flower in snapdragon D. Tall and dwarf pea Answer: B 17. 9:7 ratio indicates: A. Dihybrid cross B. Complementary genes C. Duplicate genes D. Recessive epistasis Answer: B 18. 12:3:1 ratio indicates: A. Dominant epistasis B. Recessive epistasis C. Duplicate genes D. Codominance Answer: A 19. 9:3:4 ratio indicates: A. Recessive epistasis B. Duplicate recessive C. Supplementary genes D. Polygenic inheritance Answer: A 20. Sickle cell anaemia is: A. Chromosomal disorder B. Point mutation C. Polyploidy disorder D. Epigenetic disorder Answer: B 21. Down syndrome is due to: A. Trisomy 21 B. Monosomy X C. Extra Y D. Trisomy 18 Answer: A 22. Turner syndrome genotype: A. XXY B. XO C. XYY D. XXX Answer: B 23. Klinefelter syndrome genotype: A. XO B. XXY C. XXX D. XYY Answer: B 24. Who rediscovered Mendel’s work? A. Correns, De Vries, Tschermak B. Watson, Crick C. Hershey, Chase D. Morgan Answer: A 25. Testcross ratio (monohybrid): A. 9:3:3:1 B. 1:1 C. 3:1 D. 1:2:1 Answer: B 26. Gene present only once in diploid organism is: A. Homozygous B. Heterozygous C. Hemizygous D. Polyzygous Answer: C 27. DNA is the genetic material proved by: A. Griffith B. Hershey and Chase C. Beadle and Tatum D. Watson and Crick Answer: B 28. A gene affecting multiple traits is: A. Polygenic B. Pleiotropic C. Epistatic D. Duplicate Answer: B 29. Father of experimental genetics: A. Mendel B. Morgan C. Watson D. Darwin Answer: B 30. Mutagens include: A. UV radiation B. X-rays C. Mustard gas D. All Answer: D 31. Genotype refers to: A. Physical appearance B. Genetic constitution C. Behaviour D. None Answer: B 32. Phenotype depends on: A. Genotype B. Environment C. Both D. None Answer: C 33. Pure line is: A. Heterozygous B. Homozygous C. Hemizygous D. None Answer: B 34. Law of segregation says alleles: A. Blend B. Separate during gamete formation C. Show dominance D. Mutate Answer: B 35. A normal female has: A. XX B. XY C. XO D. XXY Answer: A 36. Barr body is found in: A. Males only B. Females only C. Both D. None Answer: B 37. In humans, sex-linked recessive traits show: A. Father to son inheritance B. Criss-cross inheritance C. Mother to daughter only D. Both parents equally Answer: B 38. Colour blindness is: A. Autosomal recessive B. X-linked recessive C. Y-linked recessive D. Autosomal dominant Answer: B 39. Y-linked inheritance shows: A. Male-to-male transmission B. Female-to-female C. Mother to son D. Father to daughter Answer: A 40. Punnett square was developed by: A. Punnett B. Hardy C. Morgan D. Mendel Answer: A sukriya video dekhne ke kliye asiehi imp video dekhne ke liye like share subscribe karein and humari family ka member bane rahe thank you 9827965699 jay agannath