Question

geographical and reproductive isolation of organism gradually leads to speciation justify?

Answer 1

The chromosomal set is not similar to that of another species making the two species different on their abilities and the way they get inferred from the genes provided in which habitats and geographic area they have been isolated. If we take two organisms from different species, such as, one from a hilly tropical area with the ability to perfectly catch their preys from a greater height and another one from river which have developed and adapted towards catching and killing of marine animals, that too, in an effective manner. Both of them exhibit some of the abilities for survival and have encoded it themselves in the genes for speciation. Reproductive isolation is associated with the speciation rates, for instance, if we take those two organisms (one from tropical region and another from river area), postzygotic isolation will occur making some interspecific corrodes between the two species, the genetic contrast will be more making the distance more in one of the two individuals, leading to speciation at an intergal point when reproductive isolation and genetic distance are going to differ accordingly.