Evidence shows that the wolf is the ancestor to all of the breeds of dogs shown below. How did this variation arise in a relatively short period of time?
A. A. Genetic manipulation
B. Natural selection
C. Random chance
D. Selective breeding
Select your answer:
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Cartilage › ViewInvolves the replacement of hyaline cartilage with bony tissue.
A. Intramembranous Ossification
B. Endochondral Ossification
Bone Marrow Histology › View
Which term describes a cell that gives rise to a single, differentiated cell product?
A. Progenitor
B. Stem cell
C. Colony-forming unit
D. Differentiated