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प्रश्न
What is refer-ed to as satellite chromosome?
उत्तर
Sometimes a few chromosomes have non-staining secondary constrictions at a constant location. This gives the appearance of a small fragment called the satellite or trabant. These chromosomes are called sat (satellite) chromosomes. The nucleolus is formed by sat chromosome.
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संबंधित प्रश्न
What is a centromere?
In a cell that is not dividing, the chromosomes are visible as a tangle of fine threads called
Chromosome having centromere in its middle is
When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred to as ______
Match List - I with List - II.
| List - I | List - II | ||
| (a) | Cristae | (i) | Primary constriction in chromosome |
| (b) | Thylakoids | (ii) | Disc-shaped sacs in Golgi apparatus |
| (c) | Centromere | (iii) | Infoldings in mitochondria |
| (d) | Cisternae | (iv) | Flattened membranous sacs in the stroma of plastids |
Choose the correct answer from the options given below.
What is the feature of a metacentric chromosome?
Discuss briefly the role of nucleolus in the cells actively involved in protein synthesis.
What are histones? What are their functions?
Write the function of the following:
Centromere
Explain the functions of the nuclear pores.
