In biology, the term "thigmotropism" describes a natural response by some plants as they have contact with an object or body. In this way, the leaves of a plant move towards the object they had physical contact or growth in this direction, also it is common some leaves close or attach to an object they had contact with. A simple example of this is climbing plants that grow over specific surfaces and have specialized structures to attach to the surface or objects near to them. Therefore, it is because of thigmotropism leaves fo a sensitive plant close whenever any part of the leaf is touched.
Insertions are mutations in which extra base pairs are inserted into a new place in the DNA. Deletions are mutations in which a section of DNA is lost, or deleted.
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.
