The Nervous System and The Endocrine System.
Transformation is the genetic alteration of a cell resulting from the direct uptake of incorporation of exogenous genetic material from its surrounding through the cell membrane.
There aren't enough oxygen molecules in the air are higher altitudes
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Chromatin is within the nucleus and is found in BOTH eukarayotic and prokaryotic and is a condensed structure of DNA,proteins, and RNA. It basically protects the DNA sequence and structure. It allows for mitosis and meiosis to happen. The nuclelous is located inside the nucleus but ONLY in eukarayotic cells. It makes ribosomes.