About 95% of the time down syndrome is caused by “trisomy 21.”the person has three copies of chromosome 21, instead of the usual two copies, in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.
Answer: D) ALL THE ABOVE
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Answer:
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Explanation:Las instituciones económicas son el conjunto de entidades que se forman a través del tiempo y que van encaminadas a regular y establecer leyes con el objetivo de mejorar determinados aspectos de la economía. ... Este funcionamiento económico puede ser en diferentes materias</h3>
Cells provide structure for the body. They take in nutrients and convert it to energy as well.