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The most unique mammalian characteristic is :

( a ) four- chambered heart
( b ) fully ossified endoskeleton
( c ) two pairs of limbs
( d ) the presence of milk producing glands

1 Answer

(D) is the right answer.

The most unique mammalian characteristic is the presence of milk producing glands (mammary glands) by which the young ones are nourished.
answered Jan 3, 2014 by pady_1
 

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