The radii of two solid iron spheres are 1 cm and 6 cm respectively.A hollow sphere is made by melting the two spheres. If the external radius of the hollow sphere is 9 cm, then its thickness (in cm) is

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#Question id: 24538

#Unit 11. Evolution and Behavior

Match the following  evolutionary process  with their examples according to the fixation of allele by evolutionary process;

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#Question id: 6970

#Unit 5. Developmental Biology

Neural crest cells will become:

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#Question id: 4005

#Unit 3. Fundamental Processes

Which does not apply to the post-transcriptional processing of ribosomal RNA?

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#Question id: 10830

#Unit 10. Ecological Principles

Which of the following helps a prey species avoid being detected by a predator?

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#Question id: 23662

#Unit 13. Methods in Biology

Under normal conditions, about what minimum range of sequence similarity is desired to obtain hybridization between a cDNA probe and the desired gene in a library?