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1) A mutation is a change in_________________? a. Chromosome number b. RNA c. DNA d. Chromosome structure
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2) RNA contains__________________? a. Thymine b. Argenine c. Cystine d. Uracil
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3) Strands of DNA are bounded by___________________? a. Icygen b. Carbon c. Hybrogen d. Nitrogen
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4) The name “Suicide bag” is given to___________________? a. Ribosomes b. Centrosomes c. Microsomes d. Lysosmes
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5) The ATP formed in__________________? a. Chloroplast b. Mitochondna c. Golgi bodies d. RNA
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6) Amount of DNA is the diploid cells____________________? a. Varies with the age b. Coustant for all organismes c. Constant for particular organism d. None of the above
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7) Which are the necessary conditions for the hardy Weinberg principle for applying to genetic population________________? a. Low mutation population b. High mutation ratio and small population c. Selective mating and small population d. No migration and large population
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8) Gene responsible for the synthesis of repressor is called__________________? a. Operator gene b. Structural gene c. Regulator gene d. Promotor gene
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9) The small unit of DNA capable of undergoing crossing over and recommbination is________________? a. Recon b. Muton c. Cistron d. Complan
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10) In a population gene frequencies remain constant when there is_________________? a. Iubreeding b. Out breeding c. Random mating d. Selective mating
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11) DNA is genetic material was first discovered by____________________? a. Attmann (1889) b. Crick (1953) c. Sressler (1968) d. Avery et al (1944)
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12) Ieucaena lencocephala is a popular tree for______________________? a. Beautification b. Seasonal fruit c. Medicinal plant d. Nutritive forage
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13) Maximum vegetable crops belong to the family____________________? a. Solanaceae b. Cruciferae c. Cucurbitaceae d. Legumunaceae
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14) The term vertical resistance and horizontal resistance were first used by________________________? a. Van der plank (1963) b. Karpechenko (1927) c. Hull (1945) d. Correns (1900)
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15) A gene which enhances the natural mutations rate of another gene in the same genome is kanown as___________________? a. Mutable gene b. Mutator gene c. Recepror gene d. Articulator gene
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16) Gametophytic self incompatibility was first reported in___________________? a. Lena sativa b. Nicotine sandarac c. Set aria sphacelata d. Scale cereals
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17) Seed germination in typhoin walermelon can successfully be obtained by____________________? a. Scarification b. Seed risking c. Seed cot removal d. All the above
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18) Prescribed germination percentage of foundation seed of groundnut____________________? a. 70 b. 20 c. 90 d. 95
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19) In oat an site-specific cross between Ivena sativa and A busantus_____________________? a. Incompatible b. Partially fertile c. Sterile d. Fully fertile
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20) Reciprocal recurrent selection is effective with___________________? a. Incomplete b. Complete dominance c. Over dominance d. All the above
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