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: 18641

#I Life Science/ Life Sciences Group – I-V

Which one of the following is NOT an algorithm for building phylogenetic trees? 

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#Question id: 1653

#SCPH05 I Biotechnology

Which of the following statements does NOT apply to IgG?

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#Question id: 10189

#SCPH06 I Botany

A very common isotope substitution is when hydrogen is replaced by deuterium. This is known as a deuterium effect and is expressed by the ratio kH/kD (as explained above). Normal KIEs for the deuterium effect

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#Question id: 10955

#I Life Science/ Life Sciences Group – I-V

A 2-year-old boy bruises easily and has previously had bleeding gums. The maternal grandfather has a bleeding disorder. His physical examination shows several small bruises on the legs. Of which coagulation factor would you suspect this patient to be deficient?

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#Question id: 15921

#SCPH05 I Biotechnology

_________________is one of the limitation of animal tissue culture