Consortia Of European Scientists Show New Role For Master Patterning Genes In Defining Number Of Vertebrae In Spine

Vertebrates have in common a skeleton made of segments, the vertebrae. During development of the embryo, each segment is added in a time dependent manner, from the head-end to the tail-end: the first segments to be added become the vertebrae of the neck, later segments become the vertebrae with ribs and the last ones the vertebra located in the tail (in the case of a mouse, for example).

source : www.medicalnewstoday.com

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Submited at Wednesday, October 28th, 2009 at 12:00 pm on Orthopaedic by sofia
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