1201. In primary trisomic the extra chromosome is__________________?
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A. None of the above

B. Isochromosome

C. Normal chromosome

D. Traits located chromosome

1202. The small unit of DNA capable of undergoing crossing over and recommbination is________________?
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A. Cistron

B. Recon

C. Muton

D. Complan

1203. The term cell was introduced in 1665 by__________________?
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A. Hook

B. Schumann

C. Maligned

D. Schneider
1204. RNA contains__________________?
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A. Argenine

B. Cystine

C. Uracil

D. Thymine

1205. In half diallel, total crosses among parents are equal to___________________?
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A. P (P-1)/2

B. P (P-1)

C. P (P+1)/2

D. P2

1206. The maximum magnification possible within electron microscope is____________________?
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A. 4000 times

B. 400,000 times

C. 200,000 times

D. 2000 times

1207. The term poly genes was coined by___________________?
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A. Hazel (1943)

B. Yates (1947)

C. Mather (1943)

D. Griffing (1956)

1208. The term useful heterosis was first used by__________________?
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A. Richey (1914)

B. Hull (1950)

C. Meredith and Bridge (1972)

D. Jenkins (1935)

1209. Triticuin aestivuin is_________________?
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A. Oetaploid

B. Hexaploid

C. Triploid

D. Teuaplioid

1210. Who coined the term genetic flexibility and phenotypic flexibility___________________?
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A. Hardy (1908)

B. Salisbury (1940)

C. Thoday (1953)

D. Muller (1950)

1211. Self incompatibility in which the genes express in the style is known as__________________?
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A. Styler SL

B. Polyallelic SL

C. Diallelic SL

D. Ovarian SL

1212. A mutation is a change in_________________?
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A. DNA

B. Chromosome number

C. Chromosome structure

D. RNA

1213. Anthesis starts in wheat at__________________?
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A. 1.15 pm

B. 7.00 am

C. 10.00 am

D. 5.20 pm

1214. Reproduction from an unfertilized egg or reproduction without fertilization may be defined as___________________?
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A. Calistoga

B. Clone

C. Chimera

D. Inbreeding

1215. Mutant allele that has little or no effect on the expression of a tart is known as_____________________?
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A. Atavism

B. Auxotroph

C. Armor

D. Axoneme

1216. The concept of diallel selective mating was developed by____________________?
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A. Russel (1978)

B. Jensen (1970)

C. Jensen (1952)

D. brim (1966)

1217. Neurotoxin is found in___________________?
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A. Lucem

B. Pearl millet

C. Berseem

D. Sorghum
1218. In crop improvement programmed haploids are of great importance because they__________________?
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A. Give homozygous lines following diplodization

B. Require only about half the amount of chemical fertilizers compared to diploids

C. Grow better under adverse conditions

D. Are useful in studies on meiosis

1219. Various crosses made using a common tester are__________________?
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A. Double cross

B. Biparental cross

C. Test cross

D. Top crosses

1220. Gynandromorphy in Drosophila because of_________________?
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A. Loss of X-chromosome

B. Kappa particles

C. inheritance

D. Gain of Y-chromosome

1221. In maize source of high lysine is___________________?
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A. Opaque 2

B. Gang as

C. African tall

D. Proline

1222. Concept of ideotype___________________?
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A. Good plant model

B. Model plant type

C. Ideal plant type

D. All the above
1223. Disease and insect resistance is governed by________________?
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A. Oligogenes

B. All the above

C. Polygenes

D. Plasma genes

1224. Maximum vegetable crops belong to the family____________________?
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A. Cucurbitaceae

B. Cruciferae

C. Legumunaceae

D. Solanaceae

1225. Development of embryo from egg cell without fertilization is known as___________________?
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A. Apogamy

B. Apospory

C. Autogamy

D. Parthenogenesis
1226. An organism or cell having a chromosome number that is higher than the exact nultiple of the basic number is known as__________________?
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A. Hyperploid

B. Autopolyploid

C. Hypoploid

D. Allopolyploid

1227. Drought resistance is associated with___________________?
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A. Morphological factors

B. Biochemical factors

C. Physiological factors

D. all the above
1228. A gene which exhibits higher mutation rate than others is referred as___________________?
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A. Mutator gene

B. Mutable gene

C. Antimutalor gene

D. Hot spot

1229. The nucleic acids comprise of_________________?
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A. RNA

B. DNA

C. DNA & RNA

D. DNQA and protein

1230. The parry of Cauliflower which is eaten is__________________?
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A. Fruit

B. Inflorescence

C. Bud

D. Flower

1231. The ATP formed in__________________?
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A. Mitochondna

B. Golgi bodies

C. Chloroplast

D. RNA

1232. Superiority of heterozygote in respect to one or more traits in comparison to corresponding homozygote is known as____________________?
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A. Hetropyenosis

B. Hypostasis

C. Epistastasis

D. Heterocyst
1233. Prepotency increase with increase in_______________?
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A. Homogeneity

B. All the above

C. Homozygosity

D. Hetrozygosity

1234. Self incompatibility which is controlled by single gene found in some species of__________________?
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A. All the above

B. Leguminosae

C. Cruciferae

D. Solanaceae

1235. In allogamous species, a true breeding line obtained by continuous inbreeding is__________________?
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A. Hybrid

B. Poly cross

C. Top cross

D. Inbred
1236. A dihybrid ratio is____________________?
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A. 3:01

B. 1:1:1:1

C. 9:3:3:1

D. 27:9:9:3:3:3:1

1237. Meiosis is significant because___________________?
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A. Produces identical cells

B. Restores original number of chromosomes

C. Doubling of DNA content in the cell

D. Occurs only in somatic

1238. Strands of DNA are bounded by___________________?
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A. Carbon

B. Nitrogen

C. Hybrogen

D. Icygen

1239. The term ideotype was coined by_____________________?
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A. Rasmesson (1987)

B. Finlay (1968)

C. Donald (1968)

D. Jennings (1958)

1240. Apheliotropic gene is one which___________________?
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A. Affects more than one character

B. Affects more than five characters

C. Affects more than ten characters

D. Affects only one character

1241. The experimental design which controls fertility variation in two directions in known as_________________?
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A. AD

B. SPD

C. LSD

D. RBD

1242. Diocious plant is____________________?
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A. All the above

B. Hemp

C. Datepalm

D. Papaya

1243. Nutritional quality breeding deals with genetic improvement in__________________?
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A. All the above

B. Vitamin

C. Oil

D. Protein

1244. haploids are better for mutation studies because in them all the mutations whether recessive or dominant are expressed as_______________?
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A. There is only one alleles of each gene present in each cell

B. There are two alleles of each gene in each cell

C. Non3e4 of the above

D. There are many alleles of each gene in each call

1245. If a pure tall plant is crossed with a pure dwarf one, the ratio of tall pure dwarf in the F 2 generation after selling F1 plant will be___________________?
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A. 2:01

B. 1:02

C. 1:1

D. 3:01

1246. Soybean contains___________________?
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A. Typsin inhibitor

B. Goiterogens

C. Both A & B

D. Neither

1247. Haploid plants have been produced by another culture in tomato by_________________?
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A. Greshof and Doy (1972)

B. Singh (1960)

C. Tyagi and Prasad (1965)

D. Mehta and Upadhya (1960)

1248. Cytoplasm fills of the cavity of a cell when if is young. But in nature cells, the cytoplasm________________?
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A. Disintegrates partially

B. Contracts

C. Disappears completely

D. Becomes vacuolated
1249. Genetic correlation between two variables may be due to___________________?
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A. Peliotropy

B. Dominance

C. Gene interaction

D. Selection differential

1250. Among the following the test cross is_________________?
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A. TTxTT

B. TtxTt

C. Ttxtt

D. TTxTt