Following statement regarding divergent evolution?

A- Spreading of same species to different and isolated environments which blocks the gene flow among the distinct populations

B. vertebrate limb of whale and elephant is one example of divergent evolution

C- Both orthologous genes and paralogous genes can be said to display divergent evolution

D- Sympatric speciation leads to divergence of one species in to two are more descendant species

Which of the following combination of above statement are correct?

#Question id: 11661

#Section 1: Ecology

Autogenic factors results from the community and its organism for example filling in the pond by the dead organism from the pond itself. It included several other factors except____

#Question id: 11662

#Section 1: Ecology

During the successional process generation of community through the short time period successional process as well as long time successional process;

a) During short time period evolve pioneer community from the climax community

b) During short time period generation of the microbial community 

c) During long time period generation of end community (forest) from the pioneer community

d) During long time period generation of the microbial community 

#Question id: 11663

#Section 1: Ecology

Successional community changes in every steps,  process of lithosere is involved in a particular order manner such as,

#Question id: 11911

#Section 1: Ecology

Michael Moulton and Stuart Pimm (1986) showed how the success of birds introduced to Tahiti or the Hawaiian Islands was dependent on the morphology of the species already present , find out the correct graph represents, morphological differences and the probability of invasion success ;

#Question id: 11912

#Section 1: Ecology

The success of birds introduced to Tahiti or the Hawaiian Islands was dependent on the morphology of the species already present. If there was a small morphological difference in bill length between the resident and introduced species, then

#Question id: 11914

#Section 1: Ecology

Alder trees, which harbour nitrogen-fixing bacteria in their roots, provide nitrogen to soils developing on sandbars rivers, this is an example of,