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प्रश्न
Classify the chromosomes on the basis of position of centromere.
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उत्तर
Types of Chromosomes :
According to the position of the centromere, chromosomes are classified into following types
Metacentric : If the centromere is situated in the middle of the chromosomes it is called metacentric chromosomes.
Sub-metacentric : If the centromere is situated some distance away from the middle it is called submentacentric chromosomes.
Acrocentric : If the centromere is situated near the end of the chromosomes it is called acrocentric chromosome
Telocentric : If the centromere is situated at the tip of the chromosome it is called telocentric chromosome.
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संबंधित प्रश्न
If the number of chromosomes in an endosperm cell is 27, what will be the chromosome number in the definitive nucleus?
- 9
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i. Chromosomes are capable of self replication and play vital role in heredity, mutation, variation, and evolutionary development of eukaryotic species.
ii. Chromosomes are visible during cell division.
iii. Chemically eukaryotic chromosomes are made of mRNA, histone and non-histone proteins.
iv. The number of chromosomes varies within the population of a particular species.
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Chromosome maps/genetic maps were first prepared by ______.
Which of the following statements indicates parallelism in genes and chromosomes?
- They occur in pairs.
- They segregate during gamete formation.
- They show linkage.
- Independent pairs segregate independently.
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