Two plant species co-occur in a prairie. Species X always occurs near species Y. However, species Y often occurs in isolation from species X and produces more seeds when alone than when growing next to species X. Which of the following interactions between species X and Y could generate this pattern?

#Question id: 3314

#Section 2: Evolution

The body weight of offspring of bird species is range between 12 gm to 18 gm. In a laboratory experiment, species was subjected to selection pressure having influence on the offspring body weight. After many generations of experimental selection pressure, the body weight range between 14 gm to 16 gm. Which of the following natural selection operate on this species?

#Question id: 3316

#Section 2: Evolution

There are two population A (N = 500) and B (N=50). Due to genetic drift, both populations will lose its genetic diversity in a generation. Such losses become magnified over many generations. After 20 generations, what will be lose its original variation?

#Question id: 3317

#Section 2: Evolution

Which of the following statements is NOT correct regarding effect of genetic drift?

#Question id: 3319

#Section 2: Evolution

What will be the approximate effective population size in a panmictic population of 240 with 200 females and 40 polygamous males?

#Question id: 3320

#Section 2: Evolution

Which of the following population in hardy Weinberg equilibrium?

#Question id: 3321

#Section 2: Evolution

When an allele at one locus spreads by natural selection acting on a second locus knows as