Genetic drift refers to random changes in allele frequencies over time leads to following consequence

a. Loss of genetic diversity per generation   

b. change in allelic frequency just by chance 

c. It caused adaptive evolution

d. It one allele may reach to 0 frequency

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#Question id: 9159

#Section 2: Evolution

Which of the following investigations would shed the most light on the future distribution of organisms in temperate regions that are faced with climate change?

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#Question id: 11248

#Section 4: Behavioural Ecology

Which factor could not be considered a factor of environmental resistance?

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#Question id: 3489

#Section 4: Behavioural Ecology

 In a bird species A, the male alone builds the nest, incubates the eggs and feeds the nestling. In bird species B, it is the female that does all that. In bird species C, both sexes contribute equally to the above activities. In species A and B, the uninvolved partner may fly away and mate again. Which sex among A, B and C is most likely to develop colorful plumage during breeding season?

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#Question id: 7498

#General Aptitude

Two trains of length 250 m and 140 m are running on parallel lines in the same direction at 58 km/h and 32 km/h respectively. Find the time taken by the slower train to pass the driver of the faster one.

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#Question id: 10894

#Section 1: Ecology

A group of species that interact with each other in their exploitation of a resource gradient are referred to as