Question

write a short note on chrosomes for class 8
I want this answer by 7:45 pm on 25 Dec 2021
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Answer 1

Answer:

Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure. Chromosomes are not visible in the cell's nucleus—not even under a microscope—when the cell is not dividing. ... DNA and histone proteins are packaged into structures called chromosomes.

Answer 2

• The DNA molecule is bundled into thread-like structures called chromosomes in each cell's nucleus.
• Each chromosome is made up of DNA that is tightly coiled several times around proteins called histones, which provide structural support.
• When a cell isn't dividing, chromosomes aren't visible in the nucleus, even under a microscope.
• During cell division, however, the DNA that makes up chromosomes becomes more densely packed, making it visible under a microscope.
• The majority of what scientists know about chromosomes came from studying them during cell division.
• The centromere is a constriction point on each chromosome that separates it into two portions, or "arms." The "p arm" is the short arm of the chromosome.
• The "q arm" is the chromosome's long arm.
• The centromere's position on each chromosome determines the chromosome's shape, which may be used to assist characterise the chromosome's form.