In the past, whales had legs. From whales no longer having legs, its technically a mutation. With this, it means they can no longer go onto land, so they learned to adapt to the water.
Acidic solutions have pH of less than 7. Neutral have pH of 7. Basic solutions have pH higher than 7.
Answer: All of the mentioned Scientist made considerable contributions to understanding the DNA molecule in the order:
Explanation: 1.Fredrick Griffith
2. Avery, McCarty and MacLeod
3.Chargaff
4.Hershey and Chase
5.Watson and Crick
