While covering a distance of 24 km, a man noticed that after walking for 1 hour and 40 minutes, the distance covered by him was 5/7 of the remaining distance. What was his speed in meters per second?

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#Question id: 11768

#Unit 10. Ecological Principles

As documented by peter and rosemary grant, the population of the medium ground finch on the tiny island of Daphne major in the Galápagos archipelago responded how to changes in food resources associated with climate changes:

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#Question id: 33697

#Unit 2. Cellular Organization

Hb Kenya, another fused hemoglobin. The fusion must have resulted from unequal crossing over between 

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#Question id: 16136

#Unit 13. Methods in Biology

You obtain 6 BACs (of known order, as shown below) and 7 STSs (of unknown order) that derive from a region of mouse chromosome 16 whose genomic sequence has not yet been finished.   

 

By PCR (using 20-bp primers at either end of each STS), you test each of the 6 BACs for the presence (+) or absence (-) of each of the 7 STSs. You obtain the following results:

 

Is there a second STS at which you would like to sequence PCR products obtained using BACs as templates? If so, which BACs would you test in this way, and what sequencing results might you predict for each of the BACs tested?

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#Question id: 19867

#Unit 13. Methods in Biology

Which of the following variants of PCR were devised to prevent non-specific amplification at low temperature?

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#Question id: 26505

#Unit 3. Fundamental Processes

Which of the splicing snRNPs is common in both major and minor