As the frog develops from an egg, the genes in its DNA are expressed. As the tadpole grows, some of these genes are turned off, removing tadpole traits, while others that are needed for it to develop into a frog are turned on. This process of gene expression is crucial for the transformation from tadpole to adult frog, also known as metamorphosis.
In summary:
- Some genes are turned off to remove tadpole traits.
- Some genes are turned on to develop frog traits.