5.2 Evolution and Biodiversity
- Created by: alllllllllllllllll
- Created on: 03-05-18 16:54
View mindmap
- Topic 5.2 Natural Selection
- What causes Variation between Individuals in a species?
- Mutation: New alleles are produced by changes to sequence of bases
- Meiosis: New combinationsalleles by breaking up the existing ones in cells- -crossing over
- Sexual ReproductionNew Combinationsof genes in the diploid zygote
- Natural Selection can only occur if there is variation among members of the same species
- Essential Idea
- Diversity of life has evolved& continues to evolve by natural selection
- Adaptions
- Develop by natural selection, not with purpose of making individual suited to its environment
- Species tend to produce more offspring than the environment can support
- Will be competition for resources
- Who survives and reproduce?
- Individuals that are better adapted
- What causes Variation between Individuals in a species?
Comments
No comments have yet been made