Biology
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At one time, chondrichthyes were thought to have split off from other vertebrates
At one time, chondrichthyes were thought to have split off from other vertebrates before the evolution of bone. now we have concluded that the chondrichthyes split off after the evolution of bone had started. this change demonstrate
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momo1039
4,5(31 marks)
Chondrichthyes Class of vertebrate animals characterized by a cartilaginous endoskeleton, a skin covered by placoid scales, the structure of their fin rays, and the absence of a bony operculum, lungs, and swim bladder. It includes the subclasses Elasmobranchii (sharks, rays) and Holocephali (ghostfish).
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shealwaysknows23
4,6(23 marks)
Myeloproliferate is a disease in which the bone marrow makes too many red blood cells, platelets or even white blood cells. Myelodysplastic is a syndrome in which the patient has poorly formed blood cells that don't work properly or could be seen as defective.
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