Why has C. elegans proven to be a useful model for understanding apoptosis?
A) The animal has as many genes as complex organisms, but finding those responsible is easier than in a more complex organism.
B) The nematode undergoes a fixed and easy-to-visualize number of apoptotic events during its normal development.
C) This plant has a long-studied aging mechanism that has made understanding its death just a last stage.
D) While the organism ages, its cells die progressively until the whole organism is dead.
E) All of its genes are constantly being expressed so all of its proteins are available from each cell.
The extrinsic pathway for apoptosis in mammals
Model organisms used to study the genetics of development
The Solar Model
Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
Marcel Breuer, Armchair, Model B3.
A polygenic model for a threshold trait