Kqed1 month agoScienceWatch Ferns Get Freaky | KQEDFerns reproduce through spores and swimming sperm, without the need for pollination. [ more ]
www.scientificamerican.com3 months agoScienceSperm Cell Powerhouses Contain Almost No DNAMitochondria in human sperm contain virtually no DNA This mtDNA-elimination process may play a role in human infertility and help understand mitochondrial diseases [ more ]