Evolution
What is Natural Selection?
Natural Selection is the process through which living organisms adapt to the environment. The organisms which are better suited to their environment have a higher chance of surviving and having babies.
What is Adaptive Radiation?
Adaptive radiation is a rapid increase in the number of species with a common ancestor, characterized by great ecological and morphological diversity. This process occurs due to natural selection.
What are the Evidence for Evolution Class 12 Notes?
Evidence for evolution includes fossil records showing transitional forms, comparative anatomy demonstrating homologous structures, molecular biology revealing genetic similarities, and biogeography indicating geographic distribution patterns of species.
Where can I Find Human Evolution Notes Class 12 Notes?
You can find the biology notes of class 12 here at the top of this article.
Evolution Notes for Class 12 Chapter 6
Evolutionary biology is the study of the evolutionary processes that produced the diversity of life on Earth. Earth came into existence sometime between 4 and 5 billion years ago. Life evolved on planet Earth about 3.5 billion years ago. Since then, approximately 15 million different species of organisms have evolved. But only about two million have been identified so far. In this article, we will discuss how the life of these, at first originated on earth and how such a vast variety of organisms evolved through variation and natural selection.
Table of Content
- Origin of Life
- Evolution of Life Forms – A Theory
- Evidence for Evolution
- Adaptive Radiation
- Biological Evolution
- Mechanism of Evolution
- Hardy-Weinberg Principle
- Brief Account of Evolution
- Origin and Evolution of Man
- CBSE Previous Year Question Papers