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Delhi University Entrance Test (DUET) 2020 Previous Year Question Paper With Answer Key

This post was last modified on 27 December 2020

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Topic:- ZOO MSC S2

If Hydra is cut into many pieces [Question ID = 2508]
1. Each piece will develop into a young Hydra [Option ID = 10026]
2. Each piece having a bit of nucleus will develop into a young Hydra [Option ID = 10027]
3. Each piece having a bit of ectoderm and endoderm will gradually develop into a young Hydra [Option ID = 10028]
4. Each piece will die [Option ID = 10029]
Correct Answer :-
• Each piece having a bit of ectoderm and endoderm will gradually develop into a young Hydra [Option ID = 10028]

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Botryoidal tissue is found in [Question ID = 2509]
1. Neanthes [Option ID = 10030]
2. Earthworm [Option ID = 10031]
3. Leeches [Option ID = 10032]
4. Balanoglossus [Option ID = 10033]
Correct Answer :-
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• Leeches [Option ID = 10032]
The excretory organ in Herdmania [Question ID = 2510]
1. Protonephridium [Option ID = 10034]
2. Solenocyte [Option ID = 10035]
3. Neural gland [Option ID = 10036]
4. Flame cell [Option ID = 10037]
Correct Answer :-
• Neural gland [Option ID = 10036]
Aristotle's Lantern is found in [Question ID = 2511]
1. Echinocardium [Option ID = 10038]
2. Holothuria [Option ID = 10039]
3. Echinus [Option ID = 10040]
4. Cucumaria [Option ID = 10041]
Correct Answer:-
• Echinus [Option ID = 10040]
Which one of the following is not an insect? [Question ID = 2512]
1. Butterfly [Option ID = 10042]
2. Spider [Option ID = 10043]
3. Mosquito [Option ID = 10044]
4. Ant [Option ID = 10045]
Correct Answer :-
• Spider [Option ID = 10043]
Gynacophoral canal is found in:- [Question ID = 2513]
1. Ancylostoma duodenale [Option ID = 10046]
2. Schistosoma haematobium [Option ID = 10047]
3. Ascaris lumbricoides [Option ID = 10048]
4. Wuchereria bancrofti [Option ID = 10049]
Correct Answer :-
• Schistosoma haematobium [Option ID = 10047]

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The powerful muscle by which the bird raises and propel itself through the air is performed by:- [Question ID = 2514]
1. Pectoralis minor [Option ID = 10050]
2. Flexor perforans [Option ID = 10051]
3. Pectoralis major [Option ID = 10052]
4. Flexor major [Option ID = 10053]
Correct Answer :-
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• Pectoralis major [Option ID = 10052]
Neuromast organ in fishes are useful as:- [Question ID = 2515]
1. Current receptors [Option ID = 10054]
2. Touch receptors [Option ID = 10055]
3. Thermoreceptors [Option ID = 10056]
4. Electroreceptors [Option ID = 10057]
Correct Answer :-
• Current receptors [Option ID = 10054]
Balanoglossus also known as:- [Question ID = 2516]
1. Pin worms [Option ID = 10058]
2. Acorn worm [Option ID = 10059]
3. Tape worms [Option ID = 10060]
4. Ring worms [Option ID = 10061]
Correct Answer :-
• Acorn worm [Option ID = 10059]
In rabbit, sigmoid notch is present in:- [Question ID = 2517]
1. Pectoral girdle [Option ID = 10062]
2. Pelvic girdle [Option ID = 10063]
3. Tibio-fibula [Option ID = 10064]
4. Radius-ulna [Option ID = 10065]
Correct Answer :-
• Radius-ulna [Option ID = 10065]
Synsacrum in fowl is formed by the fusion of:- [Question ID = 2518]
1. Thoracic vertebrae [Option ID = 10066]
2. Thoracic and lumbar vertebrae [Option ID = 10067]
3. Thoracic, lumbar and sacral vertebrae [Option ID = 10068]
4. Thoracic, lumbar, sacral and caudal vertebrae [Option ID = 10069]
Correct Answer :-
• Thoracic, lumbar, sacral and caudal vertebrae [Option ID = 10069]

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Which of the following reptiles has four chambered heart? [Question ID = 2519]
1. Turtle [Option ID = 10070]
2. Sphenodon [Option ID = 10071]
3. King cobra [Option ID = 10072]
4. Crocodile [Option ID = 10073]
Correct Answer :-
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• Crocodile [Option ID = 10073]
Female Anopheles can be distinguished from female Culex because it sits [Question ID = 2520]
1. At an angle with substratum [Option ID = 10074]
2. Parallel to surface of substratum [Option ID = 10075]
3. At right angles to surface of substratum [Option ID = 10076]
4. Without using all six legs [Option ID = 10077]
Correct Answer :-
• At an angle with substratum [Option ID = 10074]
The variant hemoglobin in sickle cell anemia binds O₂ less efficiently. However, the abnormal allele has not been eliminated from the affected population as it has a selection advantage against [Question ID = 2521]
1. Pernicious anemia [Option ID = 10078]
2. Leukemia [Option ID = 10079]
3. Malaria [Option ID = 10080]
4. Thalassemia [Option ID = 10081]
Correct Answer :-
• Malaria [Option ID = 10080]
Which one of the following is an incorrect match? [Question ID = 2522]
1. Symbiosis-Trichonympha [Option ID = 10082]
2. Commensalism-Balantidium [Option ID = 10083]
3. Parasitism-Trypanosoma [Option ID = 10084]
4. Free living-Paramecium [Option ID = 10085]
Correct Answer :-
• Commensalism-Balantidium [Option ID = 10083]
Aortic arch VI gives rise to the pulmonary artery but maintains its connection with the dorsal aorta through:- [Question ID = 2523]
1. Ductus arteriosus [Option ID = 10086]
2. Ductus caroticus [Option ID = 10087]
3. Ductus bulbus [Option ID = 10088]
4. Ductus pneumaticus [Option ID = 10089]
Correct Answer :-
• Ductus arteriosus [Option ID = 10086]

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Which one of the following amphibians has partial interventricular septum in heart? [Question ID = 2524]
1. Siren [Option ID = 10090]
2. Proteus [Option ID = 10091]
3. Rana [Option ID = 10092]
4. Uraeotyphlus [Option ID = 10093]
Correct Answer :-
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• Siren [Option ID = 10090]
Which part of the middle ear transmits sound vibrations to fenestra rotunda of internal ear:- [Question ID = 2525]
1. Stapes [Option ID = 10094]
2. Incus [Option ID = 10095]
3. Malleus [Option ID = 10096]
4. Tympanum [Option ID = 10097]
Correct Answer :-
• Stapes [Option ID = 10094]
Third chamber in the stomach of a ruminant mammal is:- [Question ID = 2526]
1. Abomasum [Option ID = 10098]
2. Omasum [Option ID = 10099]
3. Rumen [Option ID = 10100]
4. Reticulum [Option ID = 10101]
Correct Answer :-
• Omasum [Option ID = 10099]
The type of jaw suspensorium in shark is:- [Question ID = 2527]
1. Autodiastylic [Option ID = 10102]
2. Amphistylic [Option ID = 10103]
3. Hyostylic [Option ID = 10104]
4. Streptostylic [Option ID = 10105]
Correct Answer :-
• Hyostylic [Option ID = 10104]
Which of the following continents is included in the Neotropical faunal realm? [Question ID = 2528]
1. North America [Option ID = 10106]
2. South America [Option ID = 10107]
3. Africa [Option ID = 10108]
4. Australia [Option ID = 10109]
Correct Answer :-
• South America [Option ID = 10107]

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Darwin's finches represent the example of [Question ID = 2529]
1. Convergent evolution [Option ID = 10110]
2. Parallel evolution [Option ID = 10111]
3. Adaptive radiation [Option ID = 10112]
4. Co-evolution [Option ID = 10113]
Correct Answer :-
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• Adaptive radiation [Option ID = 10112]
A novel phenotypic trait that helps in success of a taxonomic group and its subsequent radiation is called [Question ID = 2530]
1. Key innovation [Option ID = 10114]
2. Adaptive trait [Option ID = 10115]
3. Evolutionary novelty [Option ID = 10116]
4. Crucial trait [Option ID = 10117]
Correct Answer :-
• Key innovation [Option ID = 10114]
Dinosaurs were result of mass extinction event that took place at the [Question ID = 2531]
1. End of Devonian period [Option ID = 10118]
2. End of Cretaceous period [Option ID = 10119]
3. End of Triassic period [Option ID = 10120]
4. End of Permian period [Option ID = 10121]
Correct Answer :-
• End of Cretaceous period [Option ID = 10119]
Presence of which of the following is an important evidence for organic evolution? [Question ID = 2532]
1. homologous organs only [Option ID = 10122]
2. homologous and vestigial organs [Option ID = 10123]
3. homologous and analogous organs [Option ID = 10124]
4. analogous and vestigial organs [Option ID = 10125]
Correct Answer :-
• homologous and vestigial organs [Option ID = 10123]
Bergman's rule refers to a general tendency of mammals to be [Question ID = 2533]
1. large in size in colder areas of the their distribution [Option ID = 10126]
2. smaller in size in areas of the their distribution [Option ID = 10127]
3. darker pigments in warmer areas of the their distribution [Option ID = 10128]
4. lighter pigments in warmer areas of the their distribution [Option ID = 10129]
Correct Answer :-
• large in size in colder areas of the their distribution [Option ID = 10126]

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Which of the following statement is TRUE? [Question ID = 2534]
1. Evolution is goal oriented [Option ID = 10130]
2. Mutations are always harmful [Option ID = 10131]
3. Variations are necessary for natural selection [Option ID = 10132]
4. Speciation always requires geographical isolation [Option ID = 10133]
Correct Answer :-
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• Variations are necessary for natural selection [Option ID = 10132]
'Philosophie Zoologique' was written by:- [Question ID = 2535]
1. Charles Darwin [Option ID = 10134]
2. Jean-Baptiste Lamarck [Option ID = 10135]
3. Richard Dawkins [Option ID = 10136]
4. Russel Wallace [Option ID = 10137]
Correct Answer :-
• Jean-Baptiste Lamarck [Option ID = 10135]
Within a small population, variations can occur in gene frequencies by chance rather than natural selection. It may be referred as [Question ID = 2536]
1. Genetic flow [Option ID = 10138]
2. Genetic load [Option ID = 10139]
3. Genetic drift [Option ID = 10140]
4. Genetic equilibrium [Option ID = 10141]
Correct Answer :-
• Genetic drift [Option ID = 10140]
Monarch and Viceroy butterflies are an example of:- [Question ID = 2537]
1. Mullerian mimicry [Option ID = 10142]
2. Batesian mimicry [Option ID = 10143]
3. Peckhamian mimicry [Option ID = 10144]
4. Vavilovian mimicry [Option ID = 10145]
Correct Answer :-
• Batesian mimicry [Option ID = 10143]
The correct route through which pulse may travel in heart is [Question ID = 2538]
1. SA node> Purkinjee fibre>bundles of His> AV node> heart muscles [Option ID = 10146]
2. SA node> AV node>bundles of His> Purkinjee fibre> heart muscles [Option ID = 10147]
3. AV node> Purkinjee fibre> SA node> .bundle of His> heart muscles [Option ID = 10148]
4. AV node> SA node Purkinjee fibre> bundles of His> heart muscles [Option ID = 10149]
Correct Answer :-
• SA node> AV node>bundles of His> Purkinjee fibre> heart muscles [Option ID = 10147]

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Which of the following is controlled by autonomous nervous system? [Question ID = 2539]
1. Papillary reflex [Option ID = 10150]
2. Swallowing food [Option ID = 10151]
3. Knee jerk response [Option ID = 10152]
4. Peristalsis [Option ID = 10153]
Correct Answer :-
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• Peristalsis [Option ID = 10153]
Match List I with List II
List II
List I
Vitamins
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Diseases
A. K
I. Beri-beri
B. D
II. Haemorrhagic disease of new born
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C. B1
III. Night blindness
D. A
IV. Rickets
Choose the correct answer from the options given below: [Question ID = 2540]
1. A III, BII, CIV, D-1 [Option ID = 10154]
2. AI, BII, CIV, D III [Option ID = 10155]
3. A III, BI, C - IV, D - II [Option ID = 10156]
4. AII, BIV, CI, D - III [Option ID = 10157]
Correct Answer :-
AII, BIV, C - I, D - III [Option ID = 10157]

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Which of the following is a light compass response? [Question ID = 2541]
1. Geomagnetaxis [Option ID = 10158]
2. Hydrotaxis [Option ID = 10159]
3. Menotaxis [Option ID = 10160]
4. Mnemotaxis [Option ID = 10161]
Correct Answer :-
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• Menotaxis [Option ID = 10160]
The non-descendence of testis into the scrotal sac is referred as [Question ID = 2542]
1. Orchidectomy [Option ID = 10162]
2. Vasectomy [Option ID = 10163]
3. Hypogonadism [Option ID = 10164]
4. Cryptorchidism [Option ID = 10165]
Correct Answer :-
• Cryptorchidism [Option ID = 10165]
Hypophysectomy of the adult female rat prevents the development of:- [Question ID = 2543]
1. Primordial follicle [Option ID = 10166]
2. Primary follicle [Option ID = 10167]
3. Secondary follicle [Option ID = 10168]
4. Graffian follicle [Option ID = 10169]
Correct Answer :-
• Graffian follicle [Option ID = 10169]
Sperm receptor in the mammalian ovum is which of the following? [Question ID = 2544]
1. ZPT [Option ID = 10170]
2. ZP2 [Option ID = 10171]
3. ZP2f [Option ID = 10172]
4. ZP3 [Option ID = 10173]
Correct Answer :-
• ZP3 [Option ID = 10173]
Vasopressin is synthesized by:- [Question ID = 2545]
1. Pars distalis [Option ID = 10174]
2. Pars intermedia [Option ID = 10175]
3. Pars nervosa [Option ID = 10176]
4. Hypothalamus [Option ID = 10177]
Correct Answer :-
• Hypothalamus [Option ID = 10177]

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In the organ of Corti, apical projections of hair cells are in intimate contact with:- [Question ID = 2546]
1. Reissner's membrane [Option ID = 10178]
2. Basilar membrane [Option ID = 10179]
3. Decemet's membrane [Option ID = 10180]
4. Tectorial membrane [Option ID = 10181]
Correct Answer :-
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• Tectorial membrane [Option ID = 10181]
The hormone which causes moulting in arthropods is:- [Question ID = 2547]
1. Thyroxin [Option ID = 10182]
2. Ecdysone [Option ID = 10183]
3. Prolactin [Option ID = 10184]
4. Juvenile hormone [Option ID = 10185]
Correct Answer :-
• Ecdysone [Option ID = 10183]
End product of glycolysis in red blood cells is [Question ID = 2548]
1. Acetyl CoA [Option ID = 10186]
2. Pyruvic acid [Option ID = 10187]
3. Lactic acid [Option ID = 10188]
4. 3-Phosphoglycerate [Option ID = 10189]
Correct Answer :-
• Lactic acid [Option ID = 10188]
For a given fixed length of double stranded DNA, melting temperature (Tm) is [Question ID = 2549]
1. Directly proportional to GC base content [Option ID = 10190]
2. Inversely proportional to GC base content [Option ID = 10191]
3. Directly proportional to AT base content [Option ID = 10192]
4. Not related to base composition of DNA [Option ID = 10193]
Correct Answer :-
• Directly proportional to GC base content [Option ID = 10190]
At pH value greater than pKa of COOH group in the amino acid, the amino acid will be [Question ID = 2550]
1. Positive charged [Option ID = 10194]
2. Negative charged [Option ID = 10195]
3. No charge [Option ID = 10196]
4. Both positive and negative charges [Option ID = 10197]
Correct Answer :-
• Negative charged [Option ID = 10195]

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Calcium is stored in the muscle cell [Question ID = 2551]
1. In the cytoplasm [Option ID = 10198]
2. In the sarcoplasmic reticulum [Option ID = 10199]
3. In the mitochondria [Option ID = 10200]
4. In the golgi apparatus [Option ID = 10201]
Correct Answer :-
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• In the sarcoplasmic reticulum [Option ID = 10199]
ATP is synthesized in mitochondria and also in glycolysis. During synthesis of ATP in glycolysis, phosphate is provided by [Question ID = 2552]
1. glucose-6-phosphate and fructose-6-phosphate [Option ID = 10202]
2. 3-phospho-gyceraldhyde and di-hydroxyacetone phosphate [Option ID = 10203]
3. 1,6 bis-phosphofuctose and 3-phosphogyceric acid [Option ID = 10204]
4. 1,3 bis-phospho glycerate and phosphoenol pyruvate [Option ID = 10205]
Correct Answer :-
• 1,3 bis-phospho glycerate and phosphoenol pyruvate [Option ID = 10205]
Fructose intolerance is due to [Question ID = 2553]
1. Increased production of lactase [Option ID = 10206]
2. Increased production of amylase [Option ID = 10207]
3. Reduced production of aldolase [Option ID = 10208]
4. Reduced production of cellulase [Option ID = 10209]
Correct Answer :-
• Reduced production of aldolase [Option ID = 10208]
In presence of oxygen, glycolysis is suppressed and it is called [Question ID = 2554]
1. Bohr's Effect [Option ID = 10210]
2. Warburg Effect [Option ID = 10211]
3. Pasteur Effect [Option ID = 10212]
4. Haldane's Effect [Option ID = 10213]
Correct Answer :-
• Pasteur Effect [Option ID = 10212]
What is the pH of a solution whose hydrogen ion concentration is 3.2 x 10-4 mol/L? [Question ID = 2555]
1. 3.5 [Option ID = 10214]
2. 4.5 [Option ID = 10215]
3. 4.0 [Option ID = 10216]
4. 3.0 [Option ID = 10217]
Correct Answer :-
• 3.5 [Option ID = 10214]

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The detection of restriction fragment length polymorphisms relies on a specialized hybridization technique called [Question ID = 2556]
1. Southern blotting [Option ID = 10218]
2. northern blotting [Option ID = 10219]
3. western blotting [Option ID = 10220]
4. north-western blotting [Option ID = 10221]
Correct Answer :-
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• Southern blotting [Option ID = 10218]
Muscle phosphorylase deficiency cause a glycogen storage disease known as [Question ID = 2557]
1. McArdle's Disease [Option ID = 10222]
2. von Gierke's Disease [Option ID = 10223]
3. Cori's Disease [Option ID = 10224]
4. Andersen's Disease [Option ID = 10225]
Correct Answer :-
• McArdle's Disease [Option ID = 10222]
A symmetrical molecule that reacts asymmetrically in Krebs cycle [Question ID = 2558]
1. Citrate [Option ID = 10226]
2. Succinate [Option ID = 10227]
3. Malate [Option ID = 10228]
4. Fumerate [Option ID = 10229]
Correct Answer :-
• Citrate [Option ID = 10226]
Which of the following enzymes is involved in binding of malonyl groups? [Question ID = 2559]
1. Acyl carrier protein [Option ID = 10230]
2. Acetyl co-A ACP transacetylase [Option ID = 10231]
3. Malonyl co-A ACP transferase [Option ID = 10232]
4. B-ketoacyl ACP synthase [Option ID = 10233]
Correct Answer :-
• Malonyl co-A ACP transferase [Option ID = 10232]
Transamination reactions essentially require coenzyme [Question ID= 2560]
1. NAD [Option ID = 10234]
2. Thiamine pyrophosphate [Option ID = 10235]
3. Pyridoxal phosphate [Option ID = 10236]
4. Coenzyme A [Option ID = 10237]
Correct Answer :-
• Pyridoxal phosphate [Option ID = 10236]

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Which of the following trisomy karyotypes has the mildest effect on human development? [Question ID = 2561]
1. 47, XXX [Option ID = 10238]
2. 47, XXY [Option ID = 10239]
3. 47, XX, +13 [Option ID = 10240]
4. 47, XY,+21 [Option ID = 10241]
Correct Answer :-
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• 47, XXX [Option ID = 10238]
Which of the following conditions shows anticipation in paternal transmission? [Question ID = 2562]
1. Huntington disease [Option ID = 10242]
2. Marfan syndrome [Option ID = 10243]
3. Cystic fibrosis [Option ID = 10244]
4. Fragile X syndrome [Option ID = 10245]
Correct Answer :-
• Huntington disease [Option ID = 10242]
Which of the following conditions DOES NOT show multifactorial inheritance? [Question ID = 2563]
1. Pyloric stenosis [Option ID = 10246]
2. Schizophrenia [Option ID = 10247]
3. Spina bifida (neural tube defects) [Option ID = 10248]
4. Marfan syndrome [Option ID = 10249]
Correct Answer :-
• Marfan syndrome [Option ID = 10249]
Mendel discovered principles of inheritance because he [Question ID = 2564]
1. Observed simultaneously all the characteristics in which the parents differed [Option ID = 10250]
2. Believed that the hereditary characteristics of two individuals became thoroughly blended in the offspring [Option ID = 10251]
3. Ignored all characteristics except a few markedly contrasting ones he studied [Option ID = 10252]
4. Studied only the offspring obtained from a single mating [Option ID = 10253]
Correct Answer :-
• Ignored all characteristics except a few markedly contrasting ones he studied [Option ID = 10252]
Cornea transplant in humans is almost never rejected, because [Question ID = 2565]
1. It is composed of enucleated cells [Option ID = 10254]
2. It is a non - living layer [Option ID = 10255]
3. Its cells are not penetrable by bacteria [Option ID = 10256]
4. It is avascular [Option ID = 10257]
Correct Answer :-
• It is avascular [Option ID = 10257]

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The most sensitive area of the entire larynx and respiratory tract for triggering a cough reflex is [Question ID = 2566]
1. Glottis [Option ID = 10258]
2. Respiratory bronchioles [Option ID = 10259]
3. Laryngopharynx [Option ID = 10260]
4. Mucus membrane of carina [Option ID = 10261]
Correct Answer :-
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• Mucus membrane of carina [Option ID = 10261]
The conjugation between F' and F - cells will be:- [Question ID = 2567]
1. Two F + cells [Option ID = 10262]
2. Two F cells [Option ID = 10263]
3. Two F' cells [Option ID = 10264]
4. Two Hfr cells [Option ID = 10265]
Correct Answer :-
• Two F' cells [Option ID = 10264]
The modified dihybrid ratio due to recessive epistasis is [Question ID = 2568]
1. 9:7 [Option ID = 10266]
2. 9:3:4 [Option ID = 10267]
3. 12:3:1 [Option ID = 10268]
4. 15:1 [Option ID = 10269]
Correct Answer :-
• 9:3:4 [Option ID = 10267]
Which of the following aberrations DOES NOT change in chromosomal arm ratio? [Question ID = 2569]
1. Pericentric inversion [Option ID = 10270]
2. Paracentric inversion [Option ID = 10271]
3. Reciprocal translocation [Option ID = 10272]
4. Non-reciprocal translocation [Option ID = 10273]
Correct Answer :-
• Pericentric inversion [Option ID = 10270]
If AaBbccDdEe is crossed with AaBbCcddEe, the proportion of aabbccddee among progenies will be [Question ID = 2570]
1. 1/32 [Option ID = 10274]
2. 1/64 [Option ID = 10275]
3. 1/128 [Option ID = 10276]
4. 1/256 [Option ID = 10277]
Correct Answer :-
• 1/256 [Option ID = 10277]

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In a population of 60 individuals, 42 people were found to have an allele for polydactyly, out of which 38 were found to have an extra digit. The penetrance is:- [Question ID = 2571]
1. 0.6 [Option ID = 10278]
2. 0.70 [Option ID = 10279]
3. 0.90 [Option ID = 10280]
4. 1.00 [Option ID = 10281]
Correct Answer :-
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• 0.90 [Option ID = 10280]
65) Match the List I with List II
List I
List II
A. Test cross
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I. Determining the genotype
B. Epistasis
II. Gene expression
C. Pleiotropy
III. Masking of a gene
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D. Expressivity
IV. A single gene affecting many traits
Choose the correct answer from the options given below: [Question ID = 2572]
1. A-1, B -II, C-III, D-IV [Option ID = 10282]
2. A-1, B -III, C-IV, D-II [Option ID = 10283]
3. A-II, B -III, C-IV, D-I [Option ID = 10284]
4. A-III, B -IV, C-II, D-1 [Option ID = 10285]
Correct Answer :-
A-1, B -III, C-IV, D-II [Option ID = 10283]

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This download link is referred from the post: DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA

This post was last modified on 27 December 2020

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