In the 5—7 million years that the hominid lineage has been diverging from its common ancestor with the great apes, dozens of hominid species have arisen, often with several species coexisting in time and space. As recently as 30,000 years ago, Homo sapiens coexisted with Homo neanderthalensis. Both species had large brains and advanced intellects. The fact that these traits were common to both species is most easily explained by which of the following?

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#Question id: 14855

#Unit 13. Methods in Biology

For a Binomial distribution, the mean is 6 and the standard deviation is 2 . The Binomial distribution is 

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#Question id: 14856

#Unit 13. Methods in Biology

If 3 squares are chosen at random on a chess board the probability that they should be in a diagonal line is

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#Question id: 14857

#Unit 13. Methods in Biology

A man has 9 friends (4 men and 5 women). In how many ways can he invite them, if there have to be exactly 3 women in the invitees ?

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#Question id: 14858

#Unit 13. Methods in Biology

Given two events A and B and P(A) = 1/4, P(B/A) = 1/2, P(A/B) = 1/4. Which of the following is true?

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#Question id: 14862

#Unit 6. System Physiology – Plant

Nitrate transport is an example that is of interest not only because of its nutritional importance, nitrate is negatively charged, and such an electric charge imposes an energy requirement for the transport, Mutants in nitrate transport or nitrate reduction can be selected by growth in the presence of chlorate, Chlorate is;

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#Question id: 14863

#Unit 6. System Physiology – Plant

Plant and fungal plasma membrane H+-ATPases and Ca2+-ATPases are members of a class known as P-type ATPases, which are phosphorylated as part of the catalytic cycle that hydrolyzes ATP. Because of this phosphorylation step, the plasma membrane ATPases are strongly inhibited by