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Genetic variation is the cornerstone of evolution, without which there can be no natural selection. A low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa.SSC CHSL-2017
Two centuries ago, the black rhinoceros, which roamed much of sub-Saharan Africa, had 64 different genetic lineages, but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries: South Africa, Namibia, Kenya, Zimbabwe, and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi, and Angola have disappeared. The origins of this 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. However, from the second half of the 20th century, poaching for their horns has dramatically reduced their population and genetic diversity, especially in Kenya and Tanzania.
Genetic variation is the cornerstone of evolution, without which there can be no natural selection. A low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa.SSC CHSL-2017
Two centuries ago, the black rhinoceros, which roamed much of sub-Saharan Africa, had 64 different genetic lineages, but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries: South Africa, Namibia, Kenya, Zimbabwe, and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi, and Angola have disappeared. The origins of this 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. However, from the second half of the 20th century, poaching for their horns has dramatically reduced their population and genetic diversity, especially in Kenya and Tanzania.
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