Heath Ledger's Parents: Daughter Matilda is 'Very Much Like Her Dad'. Actor Heath Ledgerâs daughter Matilda, 7, looks an awful lot like her daddy, and his parents agree the two are âvery muchâ alike. In recognition of the fifth anniversary of Heathâs death on Jan. 22, Kim and Sally Ledger sat down with Australiaâs New Idea magazine to talk about their son.
The primitive stem cell of spermatogenesis found on the periphery of each seminiferous tubule is called spermatogonia. Spermatogonia is an undifferentiated male germ cell.
Sperm Cell Precursors. In order to produce such a huge number of sperm, the tubules contain a very large and active population of dividing, self-sustaining germ cells, which are the cells that will become gametes. The germ cells that are found in the testes are called spermatogonia.