Sexual features of the ΔPaKmt6 strain. a Spermatium production in wild-type and mutant backgrounds. See “Methods” section for details. b ΔPaKmt6 homozygote crosses result in non-homogeneous distribution of late appearing fruiting bodies showing multiple morphological defects. These crippled structures could be due to lack of neck, lack of ostiols, lack of setae, or non-canonical pear-shape envelopes, supernumerary necks, misdirected orientation, upside down growth in agar, fusions of fruiting bodies, etc.