MCQ
A polygenic inheritance in human beings is.
- ASkin colour.
- BPhenylketonuria.
- CColourblindness.
- DSickle cell anaemia.
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$I.$ The transfer of energy from producers to top consumers through a series of organisms is called food chain
$II.$ A food chain is always straight and proceeds in a progressive straight line
$III.$ In a food chain, there is unidirectional flow of energy from sun to producers and subsequently to series of different types of consumers
Which of the statements given above are correct?