The evolution of centriole degradation in mouse sperm
Proximal centriole loss and lateral head-neck attachment associatively evolved in the Muridae ancestor The fan-shaped, atypical distal centriole was discovered in 2018 using advanced electron microscopy63; prior to this year, studies of spermatozoa mainly addressed the presence or lack of barrel-shaped centrioles. Two barrel-shaped, proximal and distal centrioles are found in the spermatozoa of most …