NEO-LAMARCKISM

1. Modem modified form of Lamarck theory is regarded as Neo-Lamarckism.
2. Mc Dougall (1938) found that time taken for training the mice was reducing gradually through generations.
3. This agrees with Lamarck's idea that acquired learning is passed to the offspring.
4. Kammerer (1924) kept a species of salamander in black and yellow boxes separately.
5. This affected the skin colour pattern in their offsprings.
6. Sumner (1910) Rats reared at warmer temperature had long tail and pinna, which continued in their offsprings.
7. Tower (1952) found inheritable changes in all stages of potato beetle if subjected to varied temperature, humidity and other conditions.
8. He also found the change at nucleic acid level due to effect of radiation.