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Q.31 J chain is present in : (1) IgE (2) IgA (3) IgG (4) IgD IgA contains the J chain, a small polypeptide essential for polymerizing dimeric IgA and pentameric IgM, […]

Q.30 If the template strand of a segment of a gene has the nucleotide sequence 3′– GCTAAGC –5′, what nucleotide sequence will be present in the RNA transcript specified by […]

Q.29 Extra nuclear genomes of mitochondria and chloroplasts have evolved from : Natural selection Adaptive radiation Heteroplasmy Endosymbiosis Endosymbiosis Explains Extra Nuclear Genomes of Mitochondria and Chloroplasts Extra nuclear genomes […]

Q.28 Application of genetic fingerprinting is not directly linked with : Identification of suspects Species conservation Determining paternity Property disputes Property Disputes is the correct answer, as genetic fingerprinting (DNA fingerprinting) […]

Q.27 A nerve impulse is transmitted from one neuron to another through junction called : Dendrite Synapse Axon Impulse Synapse is the Junction for Nerve Impulse Transmission Between Neurons A […]

Q.26 Which of the following is one of the possible hazards of genetically modified (GM) crops? Modified genes of herbicide resistance from GM crops get into weed plants through pollination […]

Q.25 Which is not the heteropolysaccharide of extra cellular matrix in multicellular animals? (1) Hyaluronan (2) Keratan sulfate (3) Keratin (4) Heparin Keratin is Not a Heteropolysaccharide of Animal ECM […]

Q.24 Citronella oil is obtained from (1) Linum usitatissimum (2) Glycine max (3) Cymbopogon nardus (4) Elaeis guineensis Cymbopogon nardus is the Source of Citronella Oil Citronella oil, valued for […]

Q.23 Geitonogamy is a type of pollination, in which : Transfer of pollen grains from anther to the stigma of a different plant Transfer of pollen grains from anther to […]

Q.22 In photoperiodism, long day plant flowers only: If the night is longer than a critical dark period If the night is shorter than a critical dark period A flash […]