EMBRYOLOGY
CHROMOSOMES AND CELL DIVISIONS
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 Question 
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 Where are chromosomes located in cells? 
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  in the ribosomes 
 
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  in the vacuoles 
 
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  in the nucleus 
 
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  outside of the cell membrane 
 
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 Explanation: 
Detailed explanation-1: -In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Detailed explanation-2: -A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
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