BIO301 Past Papers

MUHAMMAD IMRAN BIO301-Essentials of Genetics · PAST MCQs · ALL IN ONE FILE · QUIZ NO 1 QUIZ NO 2 · GRAND QUIZ · MID TERM · FINAL TERM

1. THE TYPE OF CELL DIVISION IMPORTANT FOR GROWTH IS _________________MITOSIS
2. THE REGION WHERE TWO SISTER CHROMATIDS OF A CHROMOSOME JOINED OR “HELD TOGETHER” DURING MITOTIC METAPHASE IS CALLED_______________CENTROMERE
3. .IN HUMANS…. OF SOMATIC CELLS. ________________________________, ~ 220 TYPES
4. WHICH THE FOLLOWING STATEMENTS IS TRUE ABOUT HOMOLOGOUS CHROMOSOMES IN HUMAN...__________________________________MALE CELLS HAVE 22 PAIRS OF HOMOLOGOUS AND ONE PAIR OF NON-HOMOLOGOUS CHROMOSOMES.
5. HOW MANY NUMBERS OF GENES ARE PRESENT IN YEAST?..___________________5,800
6. NUCLEAR DNA REPLICATE IN THE ______________________________________S PHASE.
7. G0 PHASE IS________________________________________________ RESTING PHASE.
8. DURING THE SUMMER, THE ARCTIC FOX PRODUCES ENZYMES THAT CAUSE ITS FUR TO BECOME REDDISH BROWN. THESE ENZYMES DO NOT FUNCTION DURING THE WINTER, CAUSING THE FOX'S FUR TO BECOME WHITE AND BLEND IN WITH THE SNOW.THE CHANGE IN THE FUR COLOR SHOWS THAT....._________________________________THE EXPRESSION OF CERTAIN GENES IS AFFECTED BY TEMPERATURE.
9. GROUP OF ADJACENT NUCLEOTIDES ARE JOINED BY__A PHOSPHODIESTER BOND.

10. KINETOCHORES ARE FORMED AT____________________________CENTROMERES. 11. WHICH TYPE OF GENETICS DEALS WITH MOVEMENT OF GENES AND GENETIC TRAITS FROM PARENTS TO OFFSPRING?._____________________________________.TRANSMISSION GENETICS. 12. CHROMOSOME NUCHROMOSOMEMBER CAN BE COUNTED EASILY ONLY DURING.. _______________________________________________________MITOTIC METAPHASE. 13. WHICH OF THE FOLLOWING IS SHOW THE PLEITROPIC IN HUMAN?.._________________________________________________ALL OF THE GIVEN. 14. MEIOSIS RESULT IN.._______________________.4 HAPLOID DAUGHTER CELLS. 15. IN LIFE FORMS WITH THE ZZ-ZW CHROMOSOMAL SEX DETERMINATION,THE MALES HAVE.....______________________________________________________HOMOGAMETIC 16. GIANT CHROMOSOME FIRST DISCOVERED BY …IN 1881 IN DIPTERAN SALIVARY GLANDS AND THUS ALSO KNOWN AS SALIVARY GLAND. _________________ BALBIANI 17. A CELL WITH 10 CHROMOSOMES UNDERGOES MITOSIS. HOW MANY DAUGHTER CELLS ARE CREATED? ___ 18. EACH DAUGHTER CELL HAS ___ CHROMOSOMES...________________________.2, 10 19. LAMBRUSH CHROMOSOMES ARE FOUND IN._________..ALL OF THE MENTIONED 20. WHICH OF THE FOLLOWING ENZYMES REMOVE HELIX AND PRODUCES A NICK TO UNCOILED DNA…. ___________________________GYRASE AND TOPIOSOMERASE. 21. DARKER BANDS ARE GENERALLY FOUND NEAR THE CENTROMERE OR ON TH ENDS TELOMERES OF THE CHROMOSOME.THE POSITION OF THE DARK STAINING ARE ….OR…. ________________HETROCHROMATIC REGION , HETROCHROMATIN. 22. VARIATION ARE ENTIRELY GENETICALLY CONTROLLED ….._____DISCONTINOUS. 23. 24. WHEN ---- ARE REMOVED DUE TO CHROMOSOME BREAKAGE , THE DAMAGED CHROMOSOME ENDS CAN READILY FUSE OR UNITE WITH BROKEN ENDS OF OTHER CHROMOSOME____________________________________________________TELOMERE. 25. ----- PROVIDE TERMINAL STABILITY TO THE CHROMOSOME AND ENSURE ITS SURVIVAL….______________________________________________________.TELOMERE 26. 27. HOW MANY NUCLEAR DIVISIONS DOES A CELL GO THROUGH FOR MITOSIS? HOW MANY TIMES DOES NUCLEUS DIVIDE__________________________________________....1 28. CELL SPLITS INTO TWO…______________________________________CYTOKINESIS 29. IN LIFE FORMS WITH THE ZZ ZW CHROMOSOMAL SEX DETERMINATION , THE FEMALES ARE…._____________________________________________ HETROGAMETIC. 30. WHO IS CONSIDERED THE FATHER OF GENETICS?...___GREGOR JOHN MENDEL. 31. WHICH OF THE FOLLOWING STATEMENT IS NOT CORRECT ABOUT INCOMPLETE DOMINANCE….__________________________.ONE OF THE ALLELE IS DOMINANT. 32. DURING PROPHASE , THE NUCLEAR ENVELOPE…__________________.DISAPPEAR 33. COAT COLOUR IN LABRADOR RETRIEVER IS CONTROLLED BY EPISTASIS. B SPECIFIES BLACK PIGMENT, B IS FOR BROWN PIGMENT (RECESSIVE) AND E LOCUS DETERMINES THE EXPRESSION OF B LOCUS. WHICH ONE OF THE FOLLOWING IS WRONG? ___________________________________________A) BB EE GIVES YELLOW 34. WHICH OF THE FOLLOWING IS SHOW POLYGENIC PATTERN OF INHERITANCE… __________________________________________________________ALL OF THE GIVEN 35. WHICH ONE IS FIRST OBSERVED BY FLEMMING 1882? ________________________________________________LAMPBRUSH CHROMOSOME 36. WHEN DNA POLYMERASE IS IN CONTACT WITH GUANINE IN THE PARENTAL STRAND, WHAT DOES IT ADD TO THE GROWING DAUGHTER STRAND …._____________CYTOCIN. 37. IDENTIFY THE PURINE BASE OF NUCLEIC ACID…_____________________ ADENINE 38. IN AN EXPERIMENT YOU ATTACH AN ICE PACK ON THE CHEST OF THE HIMALAYON RABBIT FOR SEVERAL DAYS.WHAT WILL YOU OBSERVE…._____________________THE COAT COLOR OF THE AREA WILL BE DARKER. 39. WHICH OF THE FOLLOWING STATEMENT IS NOT CORRECT ABOUT GENOME CHARACTERISTICS OF PROKARYOTES__________….PROKARYOTES HAVE LOWER GENE DENSITY AS COMPARED TO EUKARYOTES. 40. THE GIANT CHROMOSOMES FOUND IN … AND THEY MAY BE AS LONG AS 300 µ AND UP TO 10 µ IN DIAMETER…___________________________________________DIPTERAL 41. WHICH OF THE FOLLOWING STATEMENT IS NOT CORRECT ABOUT MEIOSIS 1…._ _________________________________________NONE OF THE MENTIONED ABOVE. 42. THE DIAMETER OF CONDENSED SCAFFOLD ASSOCIATED CHROMATIN IS…___________________________________________________________________- 30NM 43. WHICH OF THE FOLLOWING STATEMENT IS NOT CORRECT ABOUT CONTINOUS VARIATION?... ______________________CONTINUOUS VARIATION HAS DISTINCT CATEGORIES. 44. A HEREDITY UNIT ON CHROMOSOMES IS CALLED …______________________ GENE. 45. WHICH OF THE FOLLOWING DOES NOT REVERT TO THE EUCHROMATIN STAGE________…_________________________CONSTITUTIVE HETROCHROMATIN. 46. CHROMATIN FIBERS UNDERGO FOLDING, COILING AND SUPERCOILING DURING --- SO THAT THE CHROMOSOMES BECOME PROGRESSIVELY THICKER AND SMALLER…. __________________________________________________________________PROPHASE 47. WHEN CHROMOSOMES STAINED THEY SHOW A DARK-STAINED REGION THAT IS THE…. ________________________________________________________CENTROMERE 48. SEX DETERMINATION IN INSECTS IS BASED ON._XX XO CHROMOSOMAL MODEL 49. SPINDLES MICROTUBULES ATTACH TO KINETOCHORES SPINDLE MICROTUBULES ATTACH TO THE KINETOCHORES OF CHROMOSOMES AND MOVE THE CHROMOSOMES TO THE…________________________________________________ METAPHASE PLATE. 50. THE SISTER CHROMATIDS SEPARATE DURING ANAPHASE STAGE OF…._______________________________________________ MEIOSIS 2 AND MITOSIS. 51. IN THE PARENTAL GENERATION , WHEN MENDEL CROSSED A TRUE BREEDING PEA STRAIN THAT PRODUCED SMOOTH SEEDS__ ALL F1 PROGENY SEEDS WESE SMOOTH. 52. ….. IS AN EXAMPLE OF INHERITED VARIATION…_________________FINGER PRINT. 53. MITOTIC APPARATUS HELPS IN …._____________ CHROMOSOMAL MOVEMENT. 54. HOW MANY MOST COMMON CHROMOSOMAL BANDING ARE PRESENT__--_____-… 4 55. IN DNA DOUBLE HELIX , THE TWO DNA CHAINSARE HELD TOGETHER BY_________________________________________________________________…. HYDROGEN BONDS. 56. XO SYSTEM OF SEX IS PRESENT IN …________________________ GRASSHOPPER. 57. ----- PUSH AGAINST EACH OTHER,THAT STRETCH THE CELL INTO AN OVAL

58. THE DIAGRAM WHICH SHOWS THE ARRANGEMENT OF METAPHASIC CHROMOSOMES ACCORDING TO THEIR POSITION IS CALLED…__________________________- IOEGRAM. 59. GENETICS IS THE STUDY OF …______________________ALL OF THE MENTIONED. 60. WHICH OF THE FOLLOWING HAVE CHROMOSOME NUMBER FROM 8 TO 16 AND THEIR MOST COMMON NUMBER IS…___________________________________________________________.ANGIOSPERM 61. WHICH OF THE FOLLOWING IS NOT AN EXAMPLE OF GENETIC CAUSES OF VARIATION…_______________________________________________________ NUTRIENT. 62. BANDING PATTERN OF CHROMOSOME USEDVARIETY OF TECHNIQUES AND STAIN THE GC RICH DNA…______________________________________________-. R BANDING. 63. FOR HIGH RESOLUTION CHROMOSOMES ANALYSIS ,WHICH STAGE OF THE CELL CYCLE ARE ARRESTED BEFORE STAINING…________________________- METAPHASE. 64. THE DIAMETER OF DNA DOUBLE HELIX IS …______________________________-.2NM 65. WHICH OF THE FOLLOWING STATEMENT IS NOT CORRECT ABOUT THE HEREDITARY VARIATION CONCEPTS FROM MENDELS WORK…__________________. THERE WAS NOT A CLEAR INDICATION OF HEREDITY AND VARIATIONS IN HIS WORK. 66. IN 14% OF THE NUCLEOTIDES FROM DNA NUCLEOTIDE CONTAINS THE BASE T WHAT % WILL CONTAIN THE BASE G…_____________________________________________.36% 67. THE DIAMETER OF PACKED NUCLEOSOME…____________________________…11NM 68. HISTONES HAVE TWO BASIC AMINO ACIDS_____________ ARGININE AND LYSINE 69. WHAT IS THE OTHER NAME OF A POLYTENE CHROMOSOME?....._______________________ SALIVARY GLANDS CHROMOSOME. 70. MEIOSIS IN MALES IS CALLED…_________________________.. SPERMATOGENSIS 71. GENETICS OR RESEARCH CANSTUDY THE GENOTYPE BASED ON THE PHENOTYPE IN CLASSIC GENETICS THROUGH…_______________________________________________.GENE KNOCKOUT 72. CHROMOSOMES WERE DESCRIBED BY STRAUSBERGER IN 1875. CHROMOSOME WAS FIRST USED BY_______________________________________ WALDEYER IN 1888. 73. VATRIATION IS A DIFFERENCE THAT CAN BE SEEN IN INDIVIDUAL OF THE SAME SPECIE…____________________-____________________.. IT CAN BE DUE TO GENETIC MAKEUP, ENVIRONMENT OR BY COMBINATION OF BOTH. 74. WHICH OF THE FOLLOWING STATEMENT ABOUT EUKARYOTIC CHROMOSOME IS WRONG________….EUKARYOTIC CHROMOSOME IS FOUND IN CYTOPLASM. 75. --- ARE PROTEINS USED TO PACKAGE DNA…________________________.HISTONES. 76. WHICH OF THE FOLLOWING HAS HIGHEST NUMBER OF CHROMOSOM__HORSETAIL 77. HOW MANY NUM OF BANDS CAN BE RECOGNIZED ON GIANT CHROMOSOME OF THE DROSOPHILA…__________________________________________________________ 5000 78. CHROMOSOME IDENTIFY BY…___________________________ ALL OF THE GIVEN. 79. IS AN EXAMPLE OF ACQUIRED VARIATION …_______________. ATHLETIC SKILLS. 80. WHICH OF THE FOLLOWING STATEMENT ABOUT PROKARYOTIC CHROMOSOME IS WRONG…____. PROKARYOTIC CHROMOSOME MADE OF DNA AND HISTONES 81. CARGAPHS RULES FOR DNA BASE PAIRING INDICATES THAT …_______..A+T =G+C 82. THE LONGEST STAGE IN THE CELL CYCLE IS …____________________INTERPHASE 83. CHROMOSOME HAVING CENTROMERE AT ONE END OF ARMS _____ TELOCENTRIC 84. HAVING THE SAME LENGTH, SHAPE, LOCATION AND GENES…_____..AUTOSOMES. 85. SKIN COLOR PIGMENTATION IN HUMANS IS CONTROLLED BY AT LEAST …___________________________________________________________..THREE GENES. 86. HOW MANY HOURS DOES THE G1 PHASE OF INTERPHAE TAKE TO COMPLETE A CYCLE______________________________________________________________….6 TO 12 87. HISTORICALLY FIRSTLY DEVELOPED SUB DISCIPLINE OF GENETICS…_______________________________________.TRANSMISSION GENETICS 88. DICOTS IN GENERAL , HAVE A – OF CHROMOSOME THAN MONOCOTS…______________________________________________..HIGHER LONGER. 89. WHICH ONE CHARACTERISTICS EXPRESSES ITSELF OVER THE OTHER KNOWN AS…_____________________________________________________________. DOMINANT.