Answer:
Many scientists were skeptical of the endosymbiotic hypothesis because it didn't seem to fit into the theory of evolution as it was understood then. Between 1900 and 1950, biologists made many key discoveries in the field of genetics by focusing on small, random changes in DNA — mutations — that occur when a cell reproduces.
Explanation:
Viral infections affect your immune system, when attacking it, your body works very hard to fight against them and sometimes causes a change in homeostasis as you might increase your body temperature (fever) or you might get a headache (increased blood pressure). All this can happen after the virus is “killed” because your body is trying to regain homeostasis (a balance)
As a result of deletion, the incorrect sequence of amino acids will be translated into a protein, resulting in a mutation.
A) deletion
Answer:
1. Iron (ferrous)
2. Zinc
Explanation:
Iron is a major component of hemoglobin which is responsible for the transportation of oxygen from lungs to all cells of the body, while excess iron has also negative effects on our body such as it causes liver disease (cirrhosis, cancer), heart attack, diabetes and sometimes it causes death. Zinc also plays a vital role in our body because it is a main component of all cells and also provide protection against microbes. It also needed for the production of DNA and protein. Zinc in excess amount causes copper deficiency, Nausea Stomach Pain and Diarrhea.
