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प्रश्न
Enumerate the various changes that occur in the nucleus of the cell during anaphase of mitotic division.
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उत्तर
Changes which occur in the nucleus of the cell during mitosis:
During anaphase:
- The two sister chromatids of each chromosome separate and are drawn apart towards the opposite poles.
संबंधित प्रश्न
Synthesis phase in the cell cycle is called so, because of the synthesis of more:
A. RNA
B. RNA and proteins
C. DNA
D. Glucose
Name the following:
The number of chromosomes present in a nerve cell of a human being.
Match the events given in column A with the phase in mitotic cell division in column B.
| Column ‘A’ | Column ‘B’ | ||
| 1. | Chromosomes get arranged in a horizontal plane at the equator. |
a. | Anaphase |
| 2. | Daughter chromosomes move to the opposite poles of a spindle |
b. | Prophase |
| 3. | Chromosomes become visible as fine, long threads. |
c. | Telophase |
| 4. | Chromosomes lose their distinctiveness and gradually become transformed into a chromatin network. |
d. | Metaphase |
Humans have 46 chromosomes. Their sperms and eggs will have ______ chromosomes each.
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 ______.
Chromosomes are mainly made up of ______.
Choose the correct answer:
If after karyokinesis, cytokinesis does not occur, then result would be _____________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ________________
Choose the correct answer:
The term 'chromosome' was coined by ___________
Synthesis phase in the cell cycle is called so for the synthesis of more of
Enumerate the various changes that occur in the nucleus of the cell during prophase.
Differentiate between
Chromatin and Chromosome.
Name the following:
Microtubules form the bipolar spindle in which stage.
State the Location: Polytene chromosome
Give the example of X- monosomy you have studied.
The region of the chromosome where the spindle fibres get attached during cell division ______
Define Aneuploidy.
A male gorilla has 48 chromosomes in each of its body cells. How many chromosomes will each of the sperms have?
