The rotator cuff tendons enclose the shoulder joint on all sides except on the bottom side, which partly explains the nature of most shoulder dislocations.
Rotator cuffs are a type of tendons that surround the shoulder and help in keeping the upper arm in its location and also attached to the shoulder joint. The upper arm is connected at the socket of the shoulder.
Shoulder dislocation is the injury where the upper arm is dislocated from its exact location of the socket of shoulder joint. This can also cause damage to the ligaments. Shoulder dislocation can be of three types: anterior, posterior and inferior. 
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Answer:
A single species 
Explanation:
To be useful, a scientific name has to refer to a single species.
 
        
             
        
        
        
They took different paths to discover energy, but both found that energy can be exerted, and conserved
        
                    
             
        
        
        
A phylogeny is an evolutionary ”tree” of related
organisms that can be constructed by using
information obtained from the genetic material.
Genetic information is contained in all living cells,
in the form of long DNA molecules that take the
shape of connected double- stranded spirals
(DNA stands for deoxyribonucleic acid). DNA
spirals, or “helixes”, are tightly compressed in the
nucleus of every cell. Their information is
organized into a code made up of four small
molecules — the building blocks of DNA. The
molecules, called nucleotides, are labelled:
A (adenine), C (cytosine), G (guanine) and T
(thymine).
It is possible to draw conclusions about the
evolution of a group of plant or animal species,
and the relationships among them, by comparing
selected pieces of DNA.