Answer:
In heterozygotic individuals, the gene for sickle cell anemia is protective against malaria.
Explanation:
Through the same mechanism that the mutation associated with sickle cell anemia produces the disease (altered hemoglobin structure), having a single copy of the mutation (that is, being heterozygotic) provides protection against malaria. This is believed to be due to the altered structure causing difficulty for the malaria parasite when it attempts to enter red blood cells as part of its life cycle.
Today, there are medications to successfully treat malaria, but it still killed 627,000 people in 2020. This represents a significant evolutionary pressure for genes that would prevent serious malarial illnesses. As malaria was and still is common in African regions, the result was a higher prevalence of sickle cell anemia in those of African descent.
Answer: 2. the production of new body cells to replace old cells
<span>Mitosis is a form of cell division that results in two daughter cells that are identical (genetically) to each other and to its original cell. It plays a vital role in the life cycle of most living things. </span>
<span>In single-celled (unicellular) organisms such as bacteria, mitosis is a type of asexual reproduction, making identical copies of a single cell.</span>
<span>In multicellular organisms, mitosis produces new cells to replace old cells and promote growth and repair. </span>
3. It produces RNA strands
Answer:
Intelligent Design
Some scientists who are Christians have developed a theory called Intelligent Design to explain the creation and development of life on earth.
However, in my opinion its complete nonsense