CELL DIVISION
CELL DIVISION AND CANCEROUS CELLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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One long DNA molecule.
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One long RNA molecule.
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One long sequence of amino acids.
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A single gene for a protein.
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Detailed explanation-1: -Each chromosome consists of a single, enormously long linear DNA molecule associated with proteins that fold and pack the fine DNA thread into a more compact structure. The complex of DNA and protein is called chromatin (from the Greek chroma, “color, ” because of its staining properties).
Detailed explanation-2: -Each chromosome contains a long molecule of DNA. Each DNA molecule contains many genes. A gene is a segment of a DNA molecule that gives the instructions for making a protein. Different versions of the same gene are called alleles.
Detailed explanation-3: -Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix.