o Would you expect lorge numbers of species in a region to have similar historie
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Question
o Would you expect lorge numbers of species in a region to have similar histories of ge ographic distribution? Why orwhy not Houw could you use phy ageographical analyses to address this questian biological distribution op... a ptetheguns? Research Idertifyacunment specihic example. Discuss this issue from the terms of distri bution, vicariance dispersal,i phylogeogrophically Aiscuss this issue trom the terms op distribution, vicariance, dispersal, phylogeographically b)..mam mals? Research f Identrfy a current specific example.Explanation / Answer
Ans1. Yes, this is true that large no. of species in a region have similar histories of geographic distribution because the species inhabiting in similar geographical area will have similar adaptations to survive, similar food and shelter habits requirements etc. They tend to live in mutualism and have benefitted each other. So any change in that geographical area will lead similar impact on them and hence their distribution vary accordingly.
Phylogeographical analysis means its hierarchy distribution or family tree to see the evolutionary pattern of species. If we have the phyloevolutionary history of the species distributed in the population, then we can compare them and can confirm their relation among other and within each other. This study will be helpful in showing their distribution changing pattern over the time period.
2. Effect of human on pathogens:
Human are the major cause in the shifts of pathogen in terms of distribution, variance and phylogeographically. For ex. the mutation among the pathogens that cause antibiotic resistance among them and make them more able to cause the disease in different hosts as well as allow them to withstand more diverse and adverse environment is because of human intervention like they do not properly dispose pathogenic waste, they expose them to more adverse condition making them adapted to that. They do not take proper antibiotic course making them more resistant towards these antibiotics.
In this way the pathogen become widely distributed in various geographical areas depending upon mutations and adaptations. They show much variance among themselves due to the genetic variation causing a distant phylogeographical relationship with their ancestors.
Effect of human on mammals
All the possibilities like exposure of mammals to various drugs, improper treatment and exposure to adverse condition has caused many changes in the current mammals as compared to their ancestors. Genetic interventions like hybrid making, genetic engineering in cats, monkeys etc. has lead to the genetic variance as well as phenotypic difference among the mammals. This has caused a shift of the mammals in terms of geographical distribution, and variance that consequently caused a phylogenetic distance among ancestors and current mammals.
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