Answer: alleles
Explanation:
Alleles are different forms of a given gene. Alleles are mutated forms of a given gene which controls a particular trait. For instance, the gene that codes for hemoglobin is denoted with the letter A but the gene has another variant denoted by S. In abnormal hemoglobin S (sickle hemoglobin), glutamate is replaced by valine at position 6 in the amino acid sequence of the two beta chains of hemoglobin. This change in the amino acid sequence causes the red blood cells to have a sickle shape resulting in sickle cell disease. Therefore hemoglobin A and S are alleles of a given gene.
The treatment of serious psychological disorders with prescribed medications or medical procedures that directly influence the nervous system is called <u>biomedical therapy.
</u>It is a type of therapy where medicine is used to influence physiological issues in the body, so as to treat the psychological problems of the brain. There are various ways to do this, but the most "popular" ones are drug therapies, electroconvulsive (shock) treatment, as well as psychosurgery. <u>
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<span>I think the right answer is A</span>
