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प्रश्न
State the Location: Polytene chromosome
उत्तर
Polytene chromosome: In salivary glands of fly Larve.
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संबंधित प्रश्न
State the exact location of the Centromere
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.
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 |
Choose the correct answer:
Chromosomes number is halved in _____________
Choose the correct answer:
Chromosomes largely consist of _______________
Give Reasons for the following
Chromosomes are the carriers of heredity.
Differentiate between
Cytokinesis in plant and animal cell
Name the following:
The part of the cell associated with heredity.
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
Duplicated chromosomes are joined at a point termed ______.
Multiple Choice Question:
After mitotic cell division, a female human cell will have
State the Location: Chromosomes
Name the following:
The number of chromosomes present in human gametes.
Give Technical Term:
Transmission of characters through generations.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Compare X chromosome and Y chromosome.
Describe the structure of sex chromosomes with the help of labelled diagram.
An inheritable change in the amount or the structure of a gene or a chromosome is called ______.
Distinguish between the following pair:
Karyotype and Karyokinesis
