This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 3601. |
Question : Two hormones………..(a)…………and (b)………..synthesize in hypothalamus and transported in pituitary gland through ……….(C)……….. And ………..(d)……….respectively. |
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Answer» a=oxytocin `to` C=portal CIRCULATION |
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| 3602. |
Question : Two heterozygous parents are crossed. If the two loci are linked, what would be the distribution of phenotypic features in F_1generation for a dihybrid cross? |
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Answer» Solution : If the two loci are linked, there will be two possibilities: (a) If the genes are completely linked: In the CASE of COMPLETE linkage, all the offspring will show parental phenotypes. (B) If the genes are incompletely linked: In incomplete linkage, there is occurrence of crossing over and new combinations are FORMED but the parental combinations are more NUMEROUS than the new or nonparental combinations. |
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| 3603. |
Question : Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in F_1, generation for a dihybrid cross? |
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Answer» Solution :If the TWO loci in parents are completely linked, there would be no segregation. =The `F_1` generation will EXHIBIT parental characters only. = But, if the two loci are incompletely linked then segregation would occur PARTLY and the `F_1` generation will exhibit both parental and recombinant characteristics, but the recombinant will be in a very small proportion. ![]() = Only two types of GAMETES will be produced from each parent as the two loci are linked. |
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| 3604. |
Question : Two groupsof isolated thylakoids are placed in an acidic bathing solutinso that H^(+)diffuses into the thylakoids they are then transferred to a basicbathing solution and one groups is in the dark select belwothe choice that descibes what youexpect each group of thylakoids to produce {:("In Light","In Dark"),("ATP only","Nothing"),("ATP" O_(2),"ATP only"),("ATP" O_(2) "glucose","ATP" O_(2)),("ATP" O_(2),O_(2)):} |
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Answer» |
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| 3605. |
Question : Two heterozygous parents are crossed. If the three loci are linked completely what would be the distribution of phenotypic features in resulting generation for a trihybrid cross ? |
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Answer» `1:2:1` |
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| 3606. |
Question : Two halves of pectoral girdle fuse in |
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Answer» Lateral side |
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| 3607. |
Question : Two genes .A. and .B. are linked. In a dihybrid cross involving these two genes, the F_1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation ? |
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Answer» 1:1:1:1 |
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| 3608. |
Question : Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRY and rryy genotypes are hybridized, then F_(2) segregation will show |
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Answer» HIGHER NUMBER of there combinant typcs |
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| 3609. |
Question : Two genes A and B are linked in a dihybrid cross involving these two genes, the F_(1) heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation? |
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Answer» `1:1:1:1` |
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| 3610. |
Question : Two genes a and b are linked and show 30% recombination. If ++ / ++ individual married with ab / ab then the types and proportion of gametes in F1 will be - |
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Answer» `++ 35% : AB : 35% : + a 15% : +B 15%` |
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| 3611. |
Question : Two friends are eating together on a table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of |
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Answer» Neck |
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| 3612. |
Question : Two gametes are similar in appearance they are called(A) isogametes(B) homogasmetes(C) isogametes or homogametes(D) none of the above |
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Answer» ISOGAMETES |
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| 3613. |
Question : Two-dimensional polyacrylamide gel electrophoresis was developed by |
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Answer» Maizel |
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| 3614. |
Question : Two different species cannot live for long duration in the same niche or habitat. This law is: |
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Answer» ALLEN's law |
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| 3615. |
Question : Two different species can not live for long duration in the same habitat or niche. This law is : |
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Answer» ALLEN's law |
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| 3616. |
Question : Two different plants associated with discovery of two different phytohormones having commone biosynthetic precursor exhibit one of the following characters each I. Versatile anthers II. Compound spadix III. Pentalocular ovary IV. Trifoliate compound leaves |
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Answer» II and III |
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| 3617. |
Question : Two crosses between the same pair of genotypes or phenotypes in which the sources of the gametes are reversed in one cross, is known as |
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Answer» TEST CROSS |
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| 3618. |
Question : Two core techniques that enabled birth of modern biotechnology. Identify and explain these two core techniques. |
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Answer» Solution :(i) Genetic engineering - Techniques to alter the CHEMISTRY of genetic material (RNA and DNA) to introduce these into host organisms and thus change the phenotype of the host organism. Maintenance of sterile ambiance in chemical engineering processes to enable growth of only the DESIRED MICROBE in large quantities for the manufacture of iotechnological products LKE aritibiotics, vaccines, enzymes, etc. |
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| 3619. |
Question : Two chambered heart in the development of human being indicate the fundamental |
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Answer» CHORDATE CHARACTER |
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| 3620. |
Question : Two cells A & B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure deficit 3 atm and diffusion pressure deficit 5 atm. The result will be |
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Answer» MOVEMENT of WATER from CELL A to B |
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| 3621. |
Question : Two cells A and B are continuous . Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be: |
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Answer» no movement of WATER |
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| 3622. |
Question : Two blood sampleH A and B picked up from the crime scene were handed over to the forensic depertment for gentic finger printing . Describehow tle technique of genetic finger printing is carried out. How will it be confirmed whether the samplebelonged to the same individual or two differnent individunls? |
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Answer» Solution :DNA Fingerprinting : This technique was DISCOVERED by Ales Jeffreys in 1985. The technique mvolved following steps Isolation and EXTRACTION of DNA from the ceJJ by centrifugation . By the help of enzyme RESTRICTION endonuclease, DNA molecules are digested. The FRAGMENT also contains VNTRs. The small DNA fragments are separated through gel electrophoresis set-up tha contains agarose polymer gel. The separated DNA fragments are transfered from electrophoresis plate to synthetic membranes like nitrocellulose or nylon membrane sheet called Southern blotting. The DNA probes are added which target a specific n~c~eot~de sequence which is complementary to them and this process is called hybridisation. The nylon membrane is EXPOSED to an X-ray film and dark orange coloured bands developed at sites where probes have bound to the DNA fragments. This is known as autoradiography. On comparing the DNA print of blood samples A and B, it can be confirmed that the blood sample picked up from the crime scene belongs to the same individual or to different individuals. |
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| 3623. |
Question : Two blood samples A and B picked up from the crime scene were handed over to the forensic department for genetic finger printing. Describe how the technique of genetic finger printing is carried out. |
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Answer» Solution :Technique For DNA Fingerprinting. The DNA is extracted from the nuclei of white blood cells or of spermatozoa or of the hair follicle cells that cling to the roots of hairs that have fallen, or been pulled out.(ii) The DNA molecules are first BROKEN with the help of enzyme restrictionendonuclease (called chemical knife) that cuts them into fragments.The fragments of DNA also contain the VNTRSThe fragments are separated according to SIZE by gel electrophoresis. (iv) Fragments of a particular size having VNTRs are multiplied throughPCR technique. They are treated with alkaline chemicals to split them into single stranded DNAS (v) The separated fragments of single stranded DNA are transfered onto a nylon membrane (vi) Radioactive DNA probes having repeated base sequences complementary to POSSIBLE VNTRs are poured over the nylon membrane. Some of them will bind to the single stranded VNTRs. The method of hybridization of DNA with probes is called Southern Blotting, after the name of the inventor, E.M. Southern (1975). The nylon membrane is washed to remove EXTRA probes. (vii) An X-ray film is exposed to the nylon membrane to mark the places where the radioactive DNA probes have bound to the DNA fragments These places are marked as dark bands when X-ray film is developed. This is known as autoradiography. (viii) The dark bands on X-ray film represent the DNA fingerprints (= DNA PROFILES). |
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| 3624. |
Question : Two black Guinea pigs are mated together on several occasions. Their offsprings are invariably black. However, when their black offsprings are, mated wit white Guinea pigs, half the matings results in litters containing black babies only and the other half equal numbers of black and white babies. If colour is determined by a single pair of alleles, the genotypes of the two parents are |
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Answer» HOMOZYGOUS DOMINANT and heteroxygous |
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| 3625. |
Question : Two bacteria most useful in genetic engineering are |
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Answer» Rhizobium and AZOTOBACTER |
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| 3626. |
Question :Two allelic genes are located on the : |
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Answer» Same chromosome |
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| 3627. |
Question : Twisted bones of nasal chambers are |
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Answer» Choanae |
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| 3628. |
Question : Twins. |
| Answer» SOLUTION :(1)The twins are of two type,viz.monozygotic or identical twins and dizygotic twins or fraternal twins.(2)Monzygotic twins are derived froma single zygote that splits at an early stage during development.They have same genetic constitution and are always of the same sex.(3)Dizygotic twins are formed rarely.When two ova are released simutaneousely from the OVARIES and they are in turn FERTILIZED bt two deifferent sperms then such sizygotic twins are formed.(4)Each fertilized ovum develops into embryo.It could be of the same sex or of the DIFFERENT sex.(5)Dizygotic twins are genetically dissimilar. | |
| 3629. |
Question : Twenty third pair of human chromosomes are known as |
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Answer» AUTOSOMES |
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| 3631. |
Question : TW Engelmann’s prism experiments on a green alga, Cladophora led to the discovery of- |
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Answer» Cyclic and non - cyclic photophosphorylation |
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| 3632. |
Question : Turner's syndrome and Kinefelter's syndrome. |
Answer» SOLUTION :
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| 3633. |
Question : Turner's syndrone is characterised by |
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Answer» ABSENCE of ovaries |
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| 3634. |
Question : Turner syndrome is due to |
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Answer» LOSS of X chromosome `-44 + XO` |
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| 3635. |
Question : Turgor operated valve in stomatal complex is |
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Answer» Stoma |
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| 3636. |
Question : Turgor pressure is absent/not detected during |
| Answer» Answer :D | |
| 3637. |
Question : Ture-over number of the fastest enzume is |
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Answer» `18xx10^(4)` |
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| 3638. |
Question : tunica media will be absent in the Wall of |
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Answer» arteries |
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| 3639. |
Question : Tunicated bulb is seen is …………… . |
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Answer» Scilla |
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| 3640. |
Question : Tunica vaginalis is found in |
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Answer» OVARIES of female |
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| 3641. |
Question : Tunica corpus theory was proposed by |
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Answer» schmidt |
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| 3642. |
Question : Tunica and corpus are constituents of |
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Answer» SHOOT apex |
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| 3643. |
Question : Tumour cells are irradiated by lethal doses of ___________. |
| Answer» SOLUTION :RADIATION | |
| 3644. |
Question : Tuna fish and sword fish are : |
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Answer» Regulators |
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| 3646. |
Question : Tumour producing plasmid transforms |
| Answer» SOLUTION :Plants | |
| 3647. |
Question : Tubular tower fermenter |
Answer» SOLUTION :
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| 3648. |
Question : Tumor virus contain which as a genetic material ? |
| Answer» SOLUTION :RNA | |
| 3649. |
Question : Tubular reabsorption occurs in I. proximal convoluted tubule II.collecting ducts III. loop of Henle IV. Bowman's capsule Choose the correct answer. |
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Answer» I and IV |
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| 3650. |
Question : Tuberculosis is caused by |
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Answer» MYCOBACTERIUM SP. |
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