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Behavioral geneticists have found that the effects of being brought up in a given family are sometimes detectable in childhood, but that they tend to peter out by the time the child has grown up. That is, the reach of the genes appears to get stronger as we age, not weaker. Perhaps our genes affect our environments, which in turn affect ourselves. Young children are at the mercy of parents and have to adapt to a world that is not of their choosing. As they get older, however, they can gravitate to the micro-environments that best suit their natures. Whatever genetic quirks incline a youth towards one niche or another will be magnified over time as they develop the parts of themselves that allow them to flourish in their chosen worlds.

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The Indians got to zero in two stages. First they overcame the problem of denoting empty spaces in place-value notation by drawing a circle around the space where there was a "missing" entry. This much the Babylonians had done. The circle gave rise to the present-day symbol 0 for zero. The second step was to regard that extra symbol just like the other nine. This meant developing the rules for doing arithmetic using this additional symbol along with all the others. This second step – changing the underlying conception so that the rules of arithmetic operated not on the numbers themselves but on symbols for the numbers – was the key.

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 The true essence of a writer’s voice lies far beneath the surface. It is not merely a matter of grammar and word choice. It is the writer's craving to connect. It is less craft and more courage – less ink and more blood. It is not only how the writer tells his story; it is the story he chooses tell. The story he must tell. It is the reason he writes.

When components of his New Deal got struck down by the Supreme Court of the United States, President Franklin Delano Roosevelt threatened to increase the number of its judges from nine to fifteen through a court-reform bill. He reasoned that packing the court with six new judges would bring about a new majority that would side with the government. _________. For, in 1937, Justice Owen Roberts changed his vote to side with the government-leaning judges, and Roosevelt thereafter did not need to pursue court packing.

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In his book, The Selfish Gene, Richard Dawkins puts forth the radical theory that all living creatures are essentially vehicles for their genes, and exist merely to transmit and propagate their genes. __________________. In fact, Dawkins later wrote that his choice of the word “selfish" was wrong since it attributed an anthropomorphic quality to what is essentially a bunch of chemicals. A better term, he thought, would have been “the immortal gene.

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 ___________________.For instance, 19th-century Japan was a world where steam and sail, railroads and rickshaws all shared common space. Industrial revolutions were distributed unequally in place and time. In the Second World War, the most common transport for the German army wasn’t tanks and other motorized vehicles but horses. The technological world wasn’t flat. This is the world, still, today. It is lumpy and bumpy, with old and new technologies accumulating on top of and beside each other.

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 Economic models are stylised abstractions of reality; designing them is an art and a science. I once had a professor who’d compare economic models to maps. _________. The same is true for economic models. You choose what’s important to include in order to understand how certain factors relate to each other. Even then, the math gets very complicated. Equations help economists see subtle points, higher order effects, changes in incentives, and how their ideas relate to earlier work. It also helps them to test their theories on data.

Choose the option which fits in best in the given blank:

Direction: In the question, there are six sentences marked 1, P, Q, R, S, 6. The positions of 1 and 6 are fixed as the first and last sentences of the passage. You are required to choose one of the four alternatives given below every passage, which would be the most logical sequence of the sentences in the passage.

1- This practitioner is a member of.
P- By massage and other manipulative procedures, a technique.
Q- The profession that originated in 1874 when Andrew T. still.
R- Based on the theory that illness may be caused by the undue pressure.
S- Devised a drugless technique for curing diseases.
6- Of displaced bones on nerves and blood vessels. 

Direction: In the question, there are six sentences marked 1, P, Q, R, S, 6. The positions of 1 and 6 are fixed as the first and last sentences of the passage. You are required to choose one of the four alternatives given below every passage, which would be the most logical sequence of the sentences in the passage.

1- Few men can exert the full power of their intellect.
P- And of course the injury done to the health.
Q- At the time when nature prescribes sleep.
R- Must in the long run have a bad effect.
S- Without ruining their health thereby.
6- On the quality of work done.