Wings of pigeon, mosquito and bat show
Organisms which obtain energy by the oxidation of reduced inorganic compounds are called
The fossils of Cro-Magnon were found in
$A$ : There is $99\;\%$ homology in haemoglobin of man and Gorilla. $R$ : Modern man is direct descendent of Gorilla.
There are two opposing views about origin of modern man. According to one view Homo erectus in Asia were the ancestors of modern man. A study of variation of $DNA $ however suggested African origin of modern man. What kind of observation on $DNA$ variation could suggest this
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