Question

As per modern synthetic theory organic evolution depends upon

• A. Mutation, reproductive isolation and natural selection
• B. Gene recombination and natural selection
• C. Mutation and natural selection
• D. All of the above

Answer 1

The correct option is D All of the above

The synthetic theory of evolution is based on gene mutation, gene recombination, natural selection, genetic drift, isolation.(Other factors-migration, hybridisation,chance)

1. Mutation, recombination, natural selection, genetic drift and isolation are involved in natural selection.
2. Mutation is an important source of variation that fulfills gene pool and remains a base to polygenic or multi-factorial inheritance.
3. The process of micro-evolution is governed by natural selection and gene flow is affected by reproductive isolation.
4. Evolution is governed by genetic drift.
5. Micro-evolutionary factors create new species.