Study MaterialsNCERT SolutionsNCERT Solutions For Class 12 BiologyNCERT Solutions for class 12 Biology chapter 7 evolution 7.6 mechanism of evolution

NCERT Solutions for class 12 Biology chapter 7 evolution 7.6 mechanism of evolution

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NCERT Solutions for Class 12 Biology Chapter 7 Topic- Mechanism of Evolution

NCERT Solutions for Class 12 Biology Chapter 7 Topic- Mechanism of Evolution and all chapter Topics produced by qualified teachers according to NCERT (CBSE) book rules are available as a free PDF download. Class 12 Biology Chapter 7 Topic- Mechanism of Evolution Questions with Solutions to assist you in revising the entire syllabus and achieving higher grades. Register to receive all exercise solutions through email.

Solutions

Overview of topic

Individual organisms do not evolve, but populations do. A population refers to a group of interbreeding members of a single species living in the same geographic region at the same time. A population evolves because it comprises a gene pool, which is a collection of genes. A population evolves when changes in the gene pool occur.

The mutation is a random change in an organism’s genetic makeup that affects the gene pool of the population. It is a driving factor in evolution. It arises when the DNA in one or further chromosomes fluctuates. Because mutations produce new alleles, they are a source of genetic variation in populations.

Another method of evolution could take place during individual migration from one group or region to another. Migrating individuals give their genes to the gene pool of the local population when they interbreed with the new population. The population’s gene flow is established as a result of this.

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    FAQs (Frequently Asked Questions)

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