Mutations can be caused by ultraviolet radiations from the sun or is the DNA copies itself during cell division. However, acquired mutations in somatic cells (cells other than sperm and eggs) cannot be passed to the offspring. When mutations occur in reproductive cells and are called germ line mutations. A single germ line can have a range of defects.
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Tendons hold together bones and muscles, they make possible the movement and rotation of joints, and they assist in skeletal muscle coordination
The Brain region that is believed to play a critical role in OCD, is the orbital frontal cortex. Obsessive compulsive and related disorders are a group of overlapping disorders that generally involve intrusive, unpleasant thoughts and repetitive behaviors. An individual experiences thoughts and urgents that are intrusive and unwanted and/or the need to engage in repetitive behaviors or mental acts.
The first, second, and third one is the correct answer.
