Biological variation in populations is the process by which genetic and phenotypic differences arise, are maintained, and change in frequency among individuals within a species. It results from the ...
A cytogenetic survey of 148 fish from seven Paraná River basin localities found a conserved 2n = 54 karyotype alongside significant geographic variation in the frequencies and morphologies of B ...
As the world’s population surpasses seven billion, CFR Senior Fellow for Global Health Yanzhong Huang identifies the variety of ways in which different global regions are impacted by population growth ...
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