Variation

• Scientists put genetically identical plants in different conditions to see how new environments affect their appearance
• Scientists also breed animals that are genetically similar or identical twins who came from the same fertilized egg
• Often identical things look and act in a similar way
• Height and weight are mainly inherited
• Genetic-basic characteristics are the result of the genes inherited from parents
• Environmental differences between people can be because of environment, e.g. scars
• Genetically identical plants can grow in different conditions resulting in them not being identical
• Same differences between people are both environmental and genetic, e.g. skin tones becoming darker in sunny environments
• Height and weight are used in groups to study the impact of genetics and environment