The recessive mutant allele that causes cystic fibrosis is much more frequent in Caucasians population than in other world populations. Some scientists believe heterozygotes must have had a survival advantage during plagues such as cholera that occasionally swept through this population. What concept does this illustrate?

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#Question id: 23747

#General Aptitude

A boy is sitting on the back seat of a car. when the driver suddenly starts the car, the boy experiences a backward force-

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#Question id: 23748

#General Aptitude

In India a widow can marry her brother-in-law although a man cannot marry the sister of his dead wife-

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#Question id: 23749

#General Aptitude

Yesterday I saw an ice cube which had already melted due to the heat of a nearby furnace

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#Question id: 23750

#General Aptitude

My ten years old niece is taller than my twelve years old son

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#Question id: 23751

#General Aptitude

Which one of the following is always associated with 'Justice'?

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#Question id: 23752

#General Aptitude

Which one of the following is always associated with a 'tree'?