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The structure in chromatin seen as 'bead...

The structure in chromatin seen as 'beads-on' string' when viewed under electron microscope are called

A

Genes

B

Nucleotides

C

Nucleosomes

D

Base pairs

Text Solution

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The correct Answer is:
To answer the question "The structure in chromatin seen as 'beads-on' string when viewed under an electron microscope are called," we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Question**: The question asks for a specific structure in chromatin that appears as 'beads-on-a-string' under an electron microscope. 2. **Analyze the Options**: The options provided are: - Gene - Nucleotide - Nucleosomes - Base pairs 3. **Define Each Option**: - **Gene**: A segment of DNA that codes for a protein. - **Nucleotide**: The basic building block of DNA, consisting of a phosphate group, a sugar, and a nitrogenous base. - **Base pairs**: Pairs of nitrogenous bases in DNA (adenine with thymine and guanine with cytosine) that are held together by hydrogen bonds. - **Nucleosome**: The fundamental unit of chromatin, consisting of a segment of DNA wrapped around histone proteins. 4. **Identify the Correct Structure**: - The 'beads-on-a-string' structure refers to nucleosomes, where DNA is wrapped around histone proteins, resembling beads (nucleosomes) on a string (the DNA). 5. **Conclusion**: Based on the definitions and the structure described, the correct answer is **nucleosomes**. ### Final Answer: The structure in chromatin seen as 'beads-on' string when viewed under an electron microscope are called **nucleosomes**. ---
To answer the question "The structure in chromatin seen as 'beads-on' string when viewed under an electron microscope are called," we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Question**: The question asks for a specific structure in chromatin that appears as 'beads-on-a-string' under an electron microscope. 2. **Analyze the Options**: The options provided are: - Gene ...
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