In a field experiment, autotrophs are provided a 14C-labelled carbon compound for photosynthesis. Radioactivity (14C) levels were then monitored at regular intervals in all the trophic levels. In which ecosystem is the radioactivity likely to be detected in longer time at the higher trophic level?

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#Question id: 746

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

Two separate chains of DNA are wound around each other, each following a helical (coiling) path, resulting in:

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#Question id: 261

#SCPH12 I Genetics

Which is not a difference between B-DNA and A-DNA?

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#Question id: 13070

#SCPH06 I Botany

Antibodies raised against an antigen from one organism will react to a greater or lesser degree with similar antigens from a related organism, depending on how many surface epitopes they share. This has given rise to a systematic method of identification of microorganisms known as______?

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#Question id: 3259

#SCPH06 I Botany

Different type of evolution leads to group of taxon in following three manners

A- group of taxon whose member have descended from common ancestor

B- when two lineages convergently  evolve similar character states form  groups that are recognized by pheneticists

c. taxon that include most recent ancestor but not all of its descendent

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#Question id: 19754

#SCPH05 I Biotechnology

Which factor is not responsible for the formation of ionicbond?