Mutations occur when something alters the DNA to cause a change in gentic composition. On many occasions, mutations
have been fatal. Sometimes they can be easily cured. When a mutation occurs that is beneficial, it is known as evolution.
Mutations are both good and bad.
myth about mutations is that they are always bad. In reality, mutations keep us alive. Mutations that are useful are passed
to the next generation. Mutations that are bad may cause the person or animal to die, but it won’t be carried on to
the next generation. Overall, mutations are life’s
way to ensure that all organisms survive, no matter where they live. Also, it’s impossible to stop mutations.
Many things can cause mutations. One of the possibilities is a DNA replication error. Others can be caused by
diseases, or environmental factors. Others include Radiation, and the EM spectrum. Many people don’t realize that
their televisions, microwave, and even their radio can cause a mutation.
Each gene is made up of a sequence of nucleotides, which are paired into groups
of three. In some mutations, there is an extra nucleotide, or a missing one. Thus, the whole gene will be altered. An example
of this mutation is Sickle Cell Disease, which changes the shape of blood cells.
Induced Mutations & Causes of Mutations
Mutations can be induced by ultraviolet light, radiation, dramatic
changes in temperature, or coming in contact with harmful chemicals, such as sulfur.
Mutation and Evolution
Hugo deVries made a discovery in 1901. He
developed a theory that mutations and evolution intertwine. He said that some characteristics (changes) can be inherited
by birth. He believed that evolution resulted from a gradual selection of favorable characteristics. This goes along with
Darwin's Theory of Evolution. Throughout the world there are different environments. Sometimes mutations will help some birds live to the
best comfort in their habitat.