Grade 12 Life Sciences
Evolution by natural selection part 1
In today’s lesson, we are going to be focusing on biological evolution.
Biological evolution refers to the type of change that takes place within living organisms over long periods of millions of years. Biological evolution means that: All modern-day life forms descended or arose from and are related to those that existed in the past. They may look different from those they descended from because they became modified from one generation to another.
Up Next in Term 4
Evolution by natural selection part 2
In our last lesson, we introduced evolution by natural selection. Today we are going to be looking at multiple theories, the basis of these theories, and the scientists behind these theories.
In today’s lesson we look at artificial selection. Artificial selection is the scientific term used to describe the breeding of plants and animals for desirable characteristics and not necessarily those that would allow the offspring to survive better. And since particular desirable characteristi...
Specification and methods of reproduc...
In this lesson we will be discussing speciation and the different methods of reproductive isolation.