Question

In systems in which there is strong male-male competition for mates, natural selection should favor a strategy in which females in poor condition produce female offspring preferentially.      T     F

All scientists have agreed on what criteria must be met before two populations can be designated as separate species.      T     F

When two populations are separated geographically with no gene flow happening between them, genetic drift will always act in both populations, causing the populations to diverge.      T     F

Exploitative interactions, such as parasitism, cause fitness benefits for one partner and fitness costs for the other partner.       T     F

Selection operating within hosts will typically select for lower levels of virulence in pathogens so that individual pathogens can exist in the host for a longer period of time.       T     F

Selection operating within hosts will typically select for higher levels of virulence in pathogens because faster replicating genotypes will be favored.      T     F

Answer 1

First statement is true  there is strong male-male competition for mates, natural selection favours the preferential female offsprings in order to maintain reproductive success

The second statement is false because the basic definition of species says that those are the group of organisms who have evolved to interbreed among themselves.This alone cannot satisfy a species considering self fertization and species of fossils etc..

The third statement is true because reproductive isolation through diverging of species occur when they geographivally isolated and when no gene flow occurs and this mainly happens through gentic drift or natural selection.

Statement four is correct parasitism is an interspecific relationship in which parasite is benefited at the cost of the host.