Using the gas pedal analogy, the proto-oncogene would be an accelerator since they promote cell division and
deregulate apoptosis, while tumor suppressor would
be the brakes since they constrain the progress of the cell
cycle and induce cell apoptosis. An
oncogene is, therefore, when the accelerator
is stuck in down position and the brakes are not working.
A species is the smallest CLASSIFICATION level, then genus, family, order, class, phylum, and kingdom. Kingdoms are the most generalized and basic.
I think it 340 living in the wild and145 living in captivity
