After the rediscovery of Mendel 's laws of heredity , however , Lamarckism was finally rejected as every effort made to transmit acquired characters was seen to have failed . परंतु मेंडेल के आनुवंशिकता संबंधी नियमों की दुबारा खोज की जाने के लैमार्कवाद को अंतत : अस्वीकार कर दिया गया .