Development Biology

Notes

Development Biology

embryology is the science ,which deals with the development of organism. types of Eggs gamtogenesis formation of cleavage with developmental stages homolecithal or is slecitheal eggs in which yolk is evnetally distributed this is found in alecit eal and microleitheal eggs

Development Of Frog

Introduction of the development of frog as In breeding season during copulation the femal frog shed ova and over these the male shed spermictic fluid. One sperm penetrate the sovum as soon as the male pronucleus enter the ovum a second polar body budded off from the ovum .the ovum had the fish polar body below the vitelline membrane ,blastula stages ,gastrula stages ,nutrition,fate and metamorphosis