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how are biodiversity patterns related to speciation processes?10698598

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Asked by Blake E Palmer
Student at University of Tennessee
How are biodiversity patterns related to speciation
processes?
As of now scientists have named about 1.5 million species on Earth but estimate that 5
to 100 million species exist. Speciation plays a huge and urgent role in research now
due to the high amount of animals going extinct or becoming endangered. According to
the textbook speciation is defined as the evolution of two or more distinct species from
a single ancestral species. As species become known and more species are found our
biodiversity continues to grow, and it will continue to grow since there are so many
species that have not been named. Even though we have many unknown species were
are running into huge problems regarding the species we do have named. Due to
human made threats, many animals face extinction so we will have less species.
According to Roger K. Butlin, Jon R. Bridleand Dolph Schluter "It [speciation] can occur in
a single step, such as bypolyploidy, or it may occur by a gradual series of allelic
substitutions at multipleloci. It can happen as a by-product of adaptation to contrasting
niches orenvironments, or it can happen without any adaptation at all." These forms of
speciation are impacting our biodiversity but in what ways?
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