First invertebrates insects fossil appeared in which of the following geological ages?

a) Mesozoic b) Jurassic

c) Paleozoic d) Devonian

e) Permian f) Pennsylvanian

Which of the following combinations give the best answer?

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#Question id: 3670

#3. Fundamental Processes

The best-known examples of host-encoded site-specific recombination systems used to resolve plasmid dimers are the cer-XerCD site-specific recombination systems used by the

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#Question id: 554

#1. Molecules and their Interaction Relevant to Biology

The Lineweaver-Burk plot is used to:

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#Question id: 1030

#4. Cell Communication and Cell Signaling

The membranes of eukaryotes and mycoplasma

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#Question id: 3898

#3. Fundamental Processes

Which one of the following classes is expressed in the unfertilized egg and is involved in directing the spatial organization of the Drosophila embryo early in development?

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#Question id: 23494

#Aptitude

Which of the following statement is correct?