Flagellar Morphology in Stumpy‐Flagella Mutants of Chlamydomonas reinhardtii1

Abstract
Sixteen new mutants of the biflagellate green alga Chlamydomas reinhardtii with either stumpy-flagella or no flagella at all were examined by electron microscopy. Four of the mutants were found to carry short bulbous flagella containing amorphous electron-dense material which may represent unassembled flagellar protein. Basal bodies of normal ultrastructure were present in all mutants. Dikaryon dominance tests indicated that the stumpy mutations were recessive to wild-type in all cases tested. Stumpty mutations also conferred a measure of detergent resistant to Chlamydomonas, apparently by affecting the detergent-solubility of the flagellar membrane.