Answer:
Claim: Not all mutations are harmful.
Evidence: Mutations are changes in DNA sequences that can arise spontaneously or as a result of exposure to various external agents such as radiation, chemicals, or viruses. Some mutations have no effect on an organism, some can be beneficial, and others can be harmful. For example, mutations in the sickle cell gene that cause sickle cell anemia can be harmful, but can also provide resistance to malaria. Similarly, mutations in the CCR5 gene that make individuals immune to HIV are beneficial. Moreover, mutations play a key role in driving evolutionary processes and are the basis of genetic diversity.
Reasoning: Mutations are not inherently harmful, but their effects depend on various factors such as the type of mutation, its location, and the context of the organism. Harmful mutations are usually those that disrupt the normal functioning of essential genes or regulatory regions, leading to diseases or developmental abnormalities. However, some mutations can also be neutral or beneficial, providing advantages in terms of survival, reproduction, or adaptation to changing environments. Therefore, it is important to understand the complex interplay between mutations, genetic variation, and natural selection in shaping the diversity of life on Earth.
Step-by-step explanation: