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प्रश्न
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
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उत्तर
| X-chromosome | Y-chromosome | |
| 1. | Its non-homologous region is longer as compared to the Y-chromosome. | Its non-homologous region is shorter as compared to the X-chromosome. |
| 2. | It is metacentric. | It is acrocentric. |
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संबंधित प्रश्न
“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement?
The component which is in the nuclei of cells and carries the hereditary characteristics is called ______.
Choose the correct answer:
Chromosomes number is halved in ____________
Mention the contribution of the scientist given below in the study of chromosome:
Waldeyer
(i) Draw a neat labeled diagram to show the metaphase stage of mitosis in an animal cell having ‘6’ chromosome.
(ii) How many daughter cells are formed at the end of mitosis and at the end of meiosis?
(iii) With reference to cell division explain the following terms:
(Chromatid, Centromere, Haploid).
(iv) Name the type of cell division that occurs during:
1. Growth of shoot 2. Formation of pollen grains.
3. Repair of worn out tissues.
Write the functional activity of the following structure:
Chromosome
Write the functional activity of the following structure:
Spindle fibers
The thin thread-like structures found in the nucleus of each cell are called ______.
Read the following statements and select the correct option.
Statement I: The densely packed transcriptionally active, light staining region of chromatin is known as 'Heterochromatin'.
Statement II: The loosely packed, dark staining transcriptionally inactive region of chromatin is known as 'Euchromatin'.
