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प्रश्न
Explain the structure of a chromosome.
उत्तर
The chromosomes are thin long and thread-like structures, consisting of two identical strands called sister chromatids. They are held together by a centromere. Each chromatid is made up of a spirally coiled thin structure called chromonema. The bead-like structures along the length are called chromomeres. The chromosomes are made up of DNA, RNA, chromosomal proteins (histones and non-histones), and certain metallic ions. These proteins give structural support to the chromosome.
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संबंधित प्रश्न
What is the number of chromosomes in the gametes of human beings?
Correct the following statement if there is any mistake:
If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.
Choose the correct answer:
Chromosomes appear at equator in ____________
Mention the contribution of the scientist given below in the study of chromosome:
Strasburger
Write a sentence of the following:
Centromere
What is the importance of meiosis in creating variations?
Multiple Choice Question:
The disappearance of spindle and uncoiling of chromosomes takes place in
Multiple Choice Question:
The period between two successive mitotic divisions is
Write the functional activity of the following structure:
Chromosome
Complete the following sentence with appropriate word:
The number of chromosomes in humans is ________.
