<span>Changes in physical structure, function, or behavior that allow an organism or species to survive and reproduce in a given environment. - Adaptation</span>
The function of the capitulum, or elbow joint is to help the arm move efficiently and comfortably.
The DNA double helix coils around itself simply because it is the most stable way for the atoms to interact. In other words, the DNA molecule naturally is coiled because the chemical bonds are most stable in a helix. This is the primary structure of DNA.
Because HIV infects and destroys Helper T Cells, you would end up with a very weak immune system because T Cells identify pathogens and fight them. Without them, we aren’t able to fight of pathogens, making the body vulnerable to disease, bacteria, and viruses.
Answer:
DNA is the genetic material of all the organism except few viruses. RNA is considered as the first genetic material because it can acts as catalyst. RNA is still present as genetic material in some viruses only.
On the basis of properties DNA and RNA molecule, the question that can be arised whether RNA has the ability to provide the template for the DNA assembly. This enable the formation of a stable molecule like DNA that acts as the genetic material.
