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Transcript
Variation and Cloning 1. Variation may be due to genetic or environmental factors or a combination of both 2. Selective breeding can produce individuals with a desired characteristic 3. Animals and plants can be cloned 4. Genes from the DNA of one organism can be inserted into the DNA of another organism Variation Selective breeding Selective breeding Cloning of plants Cloning of animals Genetic Engineering Genetic Engineering Genetic Engineering Mutations 1. The sequence of DNA may be changed by radiation or mistakes in replication 2. The mutated DNA could cause a new characteristic to be seen. More often the mutation leads to genetic problems or death Mutations DNA replication Mutations Cancer Evolution and Fossils 1. Some organisms are more suited to their environment than others. They survive and pass their genes onto the next generation. Those less suited may die and not pass on their genes. This is called natural selection. 2. Evolution is the theory that all organisms have evolved from simple life-forms over billions of years 3. The fossil record gives evidence for evolution Natural Selection Survival of the fittest Evolution Natural Selection Fossil formation Fossil formation Fossil record
