Which of the following factors causes extremely high levels of toxic chemicals in fish-eating birds?

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#Question id: 4956

#Unit 11. Evolution and Behavior

Which measurement would help determine absolute dates by radiometric means?

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#Question id: 10781

#Unit 6. System Physiology – Plant

phytoecdysones, first isolated from___

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#Question id: 6558

#General Aptitude

What is the next term in the following sequence 5,7,11,13,17,19,23,29,...

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#Question id: 18770

#Unit 13. Methods in Biology

Four identical PCR reactions were carried out in tubes named I, II, III and IV. Besides the usual mix of dNTPs, each of the tubes respectively contained Ɣ-32P dATP, β-32P dATP, α-32P dATP, α-32P dNTP and α-32P rNTP. Which one of the tubes will have radiolabeled PCR product?

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#Question id: 2603

#Unit 2. Cellular Organization

If no ribosome begins translation of the leader peptide AUG, the hairpin forms by pairing of sequences 1 and 2, preventing formation of the 2 –3 hairpin, and allowing formation of the hairpin at sequences 3 –4, the condition is