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प्रश्न
Enumerate the various changes that occur in the nucleus of the cell during prophase.
उत्तर
Changes which occur in the nucleus of the cell during mitosis:
During prophase:
- The nuclear membrane and the nucleolus disappear.
- The duplicated chromosomes begin to move towards the equator of the cell.
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संबंधित प्रश्न
Correct the following statement if there is any mistake:
If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.
Fill in the blank
The _______ (s) are surrounded by radiating rays called aster
State the difference between:
Chromosome and chromatid:
The component which is in the nuclei of cells and carries the hereditary characteristics is called ______.
Choose the correct answer:
In an interphase cell chromosome are as _____________
Choose the correct answer:
Centromere is related to _______________
Write a sentence of the following:
Centromere
Name the following:
The part of the cell associated with heredity.
Complete the following sentence with appropriate word :
Chromosomes are _________ material.
Multiple Choice Question:
After mitotic cell division, a female human cell will have
Multiple Choice Question:
The period between two successive mitotic divisions is
Complete the following sentence with appropriate word:
The number of chromosomes in humans is ________.
Explain the structure of chromosomes with labelled diagram.
The sex of the newborn child is a matter of chance and neither of the parents may be considered responsible for it. What would be the possible fusion of gametes to determine the sex of the child?
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
The chromosomes are duplicated in ______.
