1) How can hybrid zones be useful in studying speciation? 2) How can you explain
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1) How can hybrid zones be useful in studying speciation? 2) How can you explain that speciation can occur rapidly between some populations but the time between speciation events is longer? 1) How can hybrid zones be useful in studying speciation? 2) How can you explain that speciation can occur rapidly between some populations but the time between speciation events is longer? 2) How can you explain that speciation can occur rapidly between some populations but the time between speciation events is longer?Explanation / Answer
1) Hybrid zones specifically depicts to the regions or area where two genetically different populations meet, mate and reproduces offsprings of mixed genomes. hybrid zones may vary in length and width and can be found between specices, races or sub-species.
Hybrid zones are useful in studying speciation in the following ways-
a) hybrid zones are found in narrow geographical locations, where different genetic population are found to be in close proximity to each other, which hybrisizes to reproduce mixed genomes offsprings.
b) spatial analysis of allele-frequency across hybrid zones results in the estimation of genetic parameters like dispersal, linkage disequilibrium and selection.
2) Speciation is a process of evolution by which one species gets splits in two or more species. Speciation is the focal point for the theory of evolution because the appearence of the species is the source of biological diversity. time required between different speciation varies considerably between species to species. Speciation process is started only after the interruption of the gentic flow between population.
Specaition occurs rapidly but the time between speciation is longer beacuse of-1) time taken by the population of newly formed species to begin divergence reproductively from each other and 2) time taken to complete speciation once divergence is started.
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