Question

Change in gene structure change the trait it represents. The theory about formation of new species with the help of such changes is :

• A. Theory of natural selection
• B. Mutation theory
• C. Theory of inheritance of acquired characters.
• D. Theory of biogenesis

Answer 1

Answer: (B)

Mutation theory

• Mutations are the sudden changes that takes place in the DNA sequence of an organism causing structural changes in genes.
  
• These are the permanent changes that can be either induced or occur naturally leading to the variation in the populations. Mutations is essential for speciation since variations are the raw material for evolution.
  

So, the correct answer is 'Mutation theory'