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प्रश्न
What is the importance of meiosis in creating variations?
उत्तर
During meiosis, the exchange of chromosomal material takes place between the non-sister chromatids forming new combinations. These new combinations give rise to variations which result in the evolution of species and even in the origin of new species.
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संबंधित प्रश्न
Name the sex chromosomes in human males and females
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
Mention the contribution of the scientist given below in the study of chromosome:
Strasburger
Mention the contribution of the scientist given below in the study of chromosome:
Sutton and Boveri
Write a sentence of the following:
Sheath
Write a sentence of the following:
Centromere
Write a sentence of the following:
Telomere
Synthesis phase in the cell cycle is called so for the synthesis of more of
What are chromosomes?
Differentiate between
Chromatin and Chromosome.
Differentiate between
Cytokinesis in plant and animal cell
Give Technical Terms
The stage at which synapsis in chromosomes to form bivalents.
Complete the following sentence with appropriate word :
Chromosomes are _________ material.
Multiple Choice Question:
The period between two successive mitotic divisions is
State the Location: Chromosomes
Give Technical Term:
Transmission of characters through generations.
Write the functional activity of the following structure:
Chromosomes
Explain the structure of chromosomes with labelled diagram.
Match the following.
| 1. Autosomes | - | Trisomy 21 |
| 2. Diploid condition | - | 9 : 3 : 3 : 1 |
| 3. Allosome | - | 22 pair of chromosome |
| 4. Down’s syndrome | - | 2n |
| 5. Dihybrid ratio | - | 23rd pair of chromosome |
