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Question
What is refer-ed to as satellite chromosome?
Solution
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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RELATED QUESTIONS
What are nuclear pores?
What is a centromere?
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.
A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is ______.
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.
