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प्रश्न
Choose the correct answer:
During mitosis which of the following disintegrate ___________
विकल्प
nucleolus
nuclear membrane
both (a) and (b)
none of these
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उत्तर
During mitosis which of the following disintegrate Both (a) and (b)
APPEARS IN
संबंधित प्रश्न
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 |
Mention the contribution of the scientist given below in the study of chromosome:
Strasburger
Write a sentence of the following:
Telomere
Choose the correct answer:
The term 'chromosome' was coined by ___________
Choose the correct answer:
Thick short chromosomes can be observed at (in mitosis) ___________
Choose the correct answer:
Chromosome number of man is _____________
The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in ______.
Enumerate the various changes that occur in the nucleus of the cell during anaphase of mitotic division.
Give Technical Terms
The stage at which the formation of chiasmata occurs.
Name the following:
The pattern of arrangement of genes along a chromosome.
Name the following:
Pair of genes responsible for a particular characteristic.
Write the functional activity of the following structure:
Chromosomes
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| Genetics | Chromosomes are similar in size and shape. |
| Autosomes | The alternative forms of a gene. |
| Recessive gene | Study of laws of inheritance of characters |
| Allele | A gene that can express only when in a similar pair. |
| Homologous chromosomes | Chromosomes are other than the pair of sex chromosomes. |
Describe the structure of sex chromosomes with the help of labelled diagram.
Some of the chromosomes have an elongated knob-like appendages known as telomere.
After a mitotic cell division, a human female cell will have ______.
Distinguish between the following pair:
Karyotype and Karyokinesis
