A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four alternatives.
Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so 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.
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 the 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.
Sub Sharan Africa has lost how many black rhino genetic lineages in 200 years?
Genetically unique black rhinoceros has been lost in all of the following countries, except?
From the second half of the 20th century what has caused a dramatic fall in black rhinoceros population?
Genetic diversity is proportional to __________.
For the following questions answer them individually
Select the related word from the given alternatives.
Pencil : Lead :: Pen : ?
Select the related letters from the given alternatives.
DGI : JMO :: RUW : ?
Select the related number from the given alternatives.
236 : 472 :: 123 : ?
Select the odd word from the given alternatives.
Select the odd letters from the given alternatives.
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