Using molecular clock, it was estimated that two species X and Y must have diverged from their common ancestor about 5 x 10^6 years ago. If the rate of divergence per base pair is estimated to be 0.06 per million years, what is the proportion of base pairs that differ between the two species now?

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#Question id: 29021

#Unit 11. Evolution and Behavior

A researcher measures mandible length of 500 individuals in a bird's species, given depicted graph of these population is represents;

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#Question id: 2901

#Unit 2. Cellular Organization

HOTAIR is a lncRNA whose gene is found in the HoxC cluster in humans, but it acts by regulating expression of the HoxD genes on another chromosome (in trans) by recruiting to that locus Polycomb Repressive Complex 2 (PCR2). Which of the following processes is incorrect regarding this regulation?

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#Question id: 14494

#Unit 13. Methods in Biology

A card is drawn from a pack of 52 cards and then a second is drawn. Probability that both the cards drawn are queen is

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#Question id: 2160

#Unit 2. Cellular Organization

An artificial membrane composed only of phospholipids has significant permeability to

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#Question id: 1260

#Unit 4. Cell Communication and Cell Signaling

Which of the following statement regarding RTK/Ras pathway is incorrect?