Answer:
Gene therapy replaces a faulty gene or adds a new gene in an attempt to cure disease or improve your body's ability to fight disease. Gene therapy holds promise for treating a wide range of diseases, such as cancer, cystic fibrosis, heart disease, diabetes, hemophilia and AIDS.
Explanation:
B. They had adapted to their surroundings.
Adaption observed by Darwin on the Galapagos Islands also lead to the idea of Natural Selection: that those better suited to survive in their environment will continue to live and reproduce, passing on the traits to help the descendants survive as well.<span />
There is not that much information, so it is impossible to answer this question. I apologise.
The correct option are as follows:
cholera is a bacterial infection of the small intestine.
vaccination provides protection against cholera.
the cholera vaccine is made up of a weakened form of the bacteria that causes cholera.
the vaccine will stimulate production and elicit an immune response.
- If the infection occurs again, the body will produce an even greater attack on the bacteria because of acquired immunity.
- By injecting a heat-killed, weakened organism or its component (antigen) into the body, vaccination aids in the development of immunity. Memory cells and antibodies are produced as a result.
- Memory cells aid in the development of immunological memory, which helps the immune system to respond to microorganisms that the body has previously encountered with greater strength and efficiency during a secondary immune response.
- Memory B cells and memory T cells aid in the development of immunological memory.
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