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Discovery of DNA › View

In Hershey Chase exp.,Protein tagging was done by-

A. Radioactive Phosphorus P37

B. Radioactive sulphur S 34

C. radioactive sulphur 35 S

D. radioactive Phosphorus 32 P

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Anatomy and Physiology Skeletal System › View

Which of the following steps of intramembranous ossification is correct ?

1. clusters of oestoblasts from oestoid that becomes mineralized
2. oesteoblasts differentiate within mesenchymal connective tissue
3. spicules of bone radiate out from the ossification centers
4. mesenchymal cells aggregate

A. 4,1,2,3

B. 1,2,4,3

C. 4,2,1,3

D. 4,3,2,1

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