Natural selection

• selective breeding- selection certain alleles that code for the specific trait we want
• best plants or animals are bred together
• selective breeding- reduced gene pool
• selective breeding- means best individuals are closely related (inbred)
• inbreeding can mean that inherited disease are more prone and they are prone to diseases
• selective breeding means that the population as a whole are at more of a risk of disease
• genetic engineering- taking desirable characteristics from an organism to another
• genetic engineering means to modify an organisms genome
• genetic engineering can treat inherited disorders
• to treat inherited disorders you can use gene therapy (giving a person the healthy version of a gene)
• its hard to treat inherited disorders due to: difficult to work as the faulty gene is in all cells
• its hard to treat inherited disorders due to: its hard to transfer new genes to every cell
• gene therapy is transferring a gene at an early stage of development and as they develop its passed down to other cells
• genetically modified crops advantages: more fruit, resistant to disease, more food for less money
• genetically modified crops disadvantages: we don't know how they affect our health, if they go into the wild they could alter ecosystems
• environmental impacts of genetically modified crops include: increased use of chemicals, reduced biodiversity