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B1.7

DNA, Chromosomes and genes

The code that makes up the way our body works

Manufacturing proteins to perform different functions

Makes the organism manufacture different chemicals or perform different functions

Mutation

The genes in an organism change

Cloning

Where an identical copy of one organism is made

Ethical issues, the process usually goes wrong

Variation

Reproduction

Genetic engineering

Evolution

Only attained via sexual reproduction

Provides variation in traits between organisms and prevents genetic defects

The process in which an organism creates offspring

Sexual - happens with a partner, Asexual - no partner is needed

Altering the genes of an organism

Can increase the number of organisms with desirable traits

When an organism adapts to its environments

Provides the species as a whole with a greater chance of survival