Invertebrates can be the least diverse
<h3><u>Answer;</u></h3>
Gene therapy to correct defective genes that cause diseases.
<h3><u>Explanation</u>;</h3>
- Gene therapy refers to the procedure that involves the introduction of nucleic acids (DNA or RNA) into the cells of an organism for the purpose of correcting abnormalities, such as a mutations or in other words to treat a genetic disease.
- Gene therapy entails bringing a normal and functional gene known as a trans-gene into a cell with altered gene. Another method can bring RNA capable of partially regulating or blocking the expression of an altered gene.
- The nucleic acids are introduced into the patient's cells by means of a viral vector or injected directly into the cells in the form of naked DNA.
Answer: Hormone
Explanation:
A hormone is a chemical substance produced in small quantities by an endocrine gland (such as thyroid gland in the neck) and carried in the blood to another tissue in the body where it acts as a messenger to control itsfunction.
Examples of hormones include:
- Thyroxine produced by the thyroid gland in the neck
- Testosterone produced by the testis in male humans
- Oestrogen produced by the ovary in female humans
