Slide 1 Slide 2 Prenatal: ◦ Pre-Implantation ◦ Embryonic ◦ Fetal Slide 3 An oocyte is normally fertilized by a single sperm 12-24 hours after it’s released.…
Echinodermata echinoderms tagghudingar Echinodermata general things Echinodermata – general features Echinodermata Klein, 1734 ex Bruguière, 1789 Ethymology: Greek echinos…