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: 10668

#Section 2: Evolution

Following table was shown life table where (S(x)= Live Individual , b(x) = Age specific fertility rate , g(x)= Death rate. What is NET reproductive rate?

#Question id: 10669

#Section 2: Evolution

The three graphs (A, B, C) show population growth (N) patterns in relation to N or time (t)

Which of the following above graph showing exponential growth?

#Question id: 10670

#Section 2: Evolution

To estimate the number of foxes in an area, a researcher conducted a mark-recapture survey. In the first survey, he caught and marked N number of foxes. In his second survey a week later, he caught 120 foxes of which 90 were unmarked (recaptures). If you are told that the actual number of foxes in this area is 400, what is value of N in this area?

#Question id: 11510

#Section 2: Evolution

Life history trait varies environmental condition, both survivorship and fecundity is habitat dependent in practice but intrinsic rate of increase can change as environmental change. Following life history trait is characteristic of r-selected species?

A) Later age at first reproduction                    B) Long generation time

C) Multiple broods per life spans                    D) Large number of offspring per brood

#Question id: 11511

#Section 2: Evolution

A metapopulation is

#Question id: 11512

#Section 2: Evolution

The mortality rate of organisms following a type iii survivorship curve is