Question

linker DNA, connecting two successive nucleosomes consists of

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Answer 1

Linker DNA

Explanation:

• A nucleosome is a part of DNA which is wrapped around a core of proteins;each octamer of histone is composed of two copies each of the histone proteins
• There are four histone proteins H2A, H2B, H3, and H4
• The chain of nucleosomes is then compacted further and forms a highly organized complex of DNA and protein called a chromosomes
• 34 base pairs of linker DNA is present between adjacent nucleosomes
• Linker DNA can vary widely in length in different types of tissues and cells

Answer 2

Linker DNA, connecting two successive nucleosomes consists of  chromosomes

Explanation:

• Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing.
• However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope.
• Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.
• Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.” The short arm of the chromosome is labeled the “p arm.”
• The long arm of the chromosome is labeled the “q arm.”
• The location of the centromere on each chromosome gives the chromosome its characteristic shape, and can be used to help describe the location of specific genes.

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