Lamarck hypothesized that different organisms originated separately by______I_________and gives a principle_______II_______.

a) spontaneous generation from nonliving matter

b) inheritance of acquired character

c) means of Natural Selection

d) Uniformitarianism

e) Spontaneous generation from living matter

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#Question id: 19791

#Unit 13. Methods in Biology

Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.

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#Question id: 19792

#Unit 12. Applied Biology

Expression of BtR175 gene in mammalian cells enables Cry1Aa to bind the cells and cause their lysis. The specificity seems to be lost upon reduction of which amino acid residues of the protoxin, but can be restored by reoxidation of these residues?

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#Question id: 19793

#Unit 12. Applied Biology

The specificity of cry protein seems to be lost upon reduction of which amino acid residues of the protoxin, but can be restored by reoxidation of these residues?

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#Question id: 19794

#Unit 12. Applied Biology

The specificity of cry protein is lost upon reduction of cysteine residues of the protoxin, but can be restored by

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#Question id: 19795

#Unit 12. Applied Biology

Expression of BtR175 gene in mammalian cells enables Cry1Aa to bind the cells and cause their lysis. But upon what process this specificity can get lost?

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#Question id: 19796

#Unit 12. Applied Biology

The toxicity of cry protein toxins can be increased by the following approaches

1. Site directed mutagenesis within the toxin encoding region

2. Production of hybrid cry genes by fusing selected toxin domains of two or more different cry genes

Which of the following approaches could be correct?