Article
Differences in the timing of prechondrogenic limb development in mammals: the marsupial-placental dichotomy resolved.
Evolution; international journal of organic evolution - 1 Aug 2009
Sears Karen E
Abstract excerpt
In contrast to placentals, marsupials are born with forelimbs that are greatly developmentally advanced relative to their hind limbs. Despite significant interest, we still do not know why this is the case, or how this difference is achieved developmentally. Studies of prechondrogenic and chondrogenic limbs have supported the traditional hypothesis that marsupial forelimb development is accelerated in response to...
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