Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms?

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#Question id: 5150

#General Aptitude

If the number 481* 673 is completely divisible by 9, then the smallest whole number in place of * will be : 

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#Question id: 4946

#Section 2: Evolution

Although absolute distinctions between the ʺmost evolvedʺ protobiont and the first living cell are unclear, biologists generally agree that one major difference is that the typical protobiont could not

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#Question id: 7702

#Section 2: Evolution

If organisms A, B, and C belong to the same class but to different orders and if organisms C, D, and E belong to the same order but to different families, which of the following pairs of organisms would be expected to show the greatest degree of structural homology?

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#Question id: 3515

#Section 2: Evolution

What proportional of F2 round seeded plant would produce all round plant after self fertilization?

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#Question id: 9566

#Section 1: Ecology

Which of the following adaptations helps kangaroo  rats conserve water?