1. Test cross is performed to know the genotype. It is a cross between.a) f1 hybrid with dominant parentb) f1 hybrid with recessive parentc) two f1 hybridsd) none of the above2. A trihybrid ratio of 27:9:9:9:3:3:3:1 is obtained because ofa) multiple allelesb) interaction of genesc) multiple factor inheritanced) independent assortment of genes3. If an organism produces 32 type of gametes, its genotype should be heterozygous fora) 4 genesb) 5 genesc) 8 genesd) 16 genes4. How many different type of phenotypes would be produced in f1 progeny in the following cross that obey mendels law of independent assortment AABBAA*aabbcca) 1b) 8c) 27d) 645. Blood groups are controlled by genes and hence are hereditary. Which of the following groups is most common in india?a) B and Rh+b) A and Rh+c) O and Rh+d) AB and Rh+6. Sickle cell anaemia is due to substitution/transversion (Point mutation) in whicha) instead of glutamic acid, valine comes at number 6th position in one of chain of Hbb) instead of valine, glutamic acid is inserted at number 6th position of -chain of Hbc) valine is inserted at number 6th position chain of Hbd) glutamic acid is substituted by valine at number 6th position of chain of Hb7. What is the phenotypic ratio of the progeny obtained by self fertilization of a codominant dihybrid individual?a) 3:1b) 1:2:1c) 1:1:1:1d) 1:2:1:2:4:2:1:2:18. 23 pairs of chromosomes can give rise to how many combinations?a) 8.6 millionb) 7.6 millionc) 6.6 milliond) 5.6 million9. Karyotype meansa) study of chromosomesb) arranging chromosomes along with their homologous pairsc) graphic representation of the genesd) diagrammatic representation of chromsomes10. The minimum number of chromosomes in plants isa) 2n = 4b) 2n = 2c) 2n = 2d) 2n = 1611. In linkage, two pairs of trains in coupling phase of linkage (bateson and punnetts coupling and repulsion theory) are used. Which of the following combinations will you select?a) AbBb*aabbb) AABB*aabbc) AAbb*aaBBd) AAbb*aabb12. In bugs, cockroach and roundworms the males possessa) one chromosome less than the femaleb) two similar sex chromosomesc) one chromosome different from restd) a Y-chromosome

13. A colour blind man marries the daughter of a colour blind lady and a normal man. Then in progenya) none of her daughter will be colour blindb) all her sons are colour blind c) all her daughter are colour blindd) half her sons are colour blind14. Genetic constitution of klinefelter syndrome isa) 44+XXYb) 44+XOc) 42+XXXXd) 44+XX15. DNA absorbs maxa) 2600 A (260 nm)b) 7600 A (760 nm)c) 3900 A (390 nm)d) 3000 A (300 nm)16. DNA strands are termed antiparallel because ofa) H bondsb) phosphor-diester bondsc) disulphide (S-S bonds)d) none of the above17. Which one of the following ratios is variable but constant for a species?a) b) c) d) none of these18. Of 64 codons in a genetic code, how many codons are responsible for specify 20 type of acidsa) 61b) 64c) 20d) 5919. If the sequence of bases in 6 base pair long palindromic sequence on one side of the axis of symmetry is 5 GAA| the complete sequence of bases of this palindromic sequence will bea) b) c) d) CTT CTT5 CTT TTC5 GAA AAG5 CTT AAG520. Presence of Nacl in body fluid indicates that life originated ina) primitive oceanb) rain water lakesc) salt solutiond) all of these21. Man originated duringa) Pliocene b) Palaeocenec) Miocened) Oligocene22. Proconsul (Dryopithecus africanus) was discovered East Africa bya) mayerb) Raymondc) leakeyd) lewis23. Palaeolithic age relates toa) prehistoric manb) modern manc) submand) backward man24. Obligate parasites are those organisms whicha) live only on living hostb) liver only on dead and decaying organic matterc) are essentially saprophytes but also can become parasitesd) are essentially parasites but also can become saprophytes25. Geometric representation of age structure is a characteristic ofa) populationb) landscapec) ecosystemd) biotic community26. A rat feeding on potato tuber is a a) carnivoreb) decomposerc) producerd) primary consumer27. GPP is equal toa) NPP+loss of cellular respirationb) NPP-loss of respirationc) NPPd) loss of cellular respiration28. Oceans occupy A percent of the earth surface and have a productivity of B percent of the productivity of the whole biosphereChose the option which fits best for A & B in order.a) 50;50b) 70;10c) 70;30d) 30;7029. First national park developed in india isa) girb) kazirangec) jim Corbettd) kanha30. One of the ex situ conservation methods for endangered species isa) wild life sanctuariesb) biosphere reservesc) cryopreservationd) national park