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प्रश्न
Complete the following sentence with appropriate word :
The spindle fibers are made of _______.
उत्तर
The spindle fibers are made of Microtubules.
APPEARS IN
संबंधित प्रश्न
State the difference between:
Chromosome and chromatid:
Choose the correct answer:
In an interphase cell chromosome are as _____________
Choose the correct answer:
Minimum coiling in chromosome is at ______________
Mention the contribution of the scientist given below in the study of chromosome:
Waldeyer
Label the lettered parts of the given figure and answer the following questions:
(i) What does this diagram represent?
(ii) What is the importance of'd'?
(iii) What are the 'staining' properties of 'b' and 'c'?
(iv) Who gave the term used for this structure today?
(v) What is a?
(vi) Is 'e' present in all chromosomes?
Choose the correct answer:
Telocentric chromosomes are _________________
Choose the correct answer:
Sex of an individual is determined by ____________
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Differentiate between
Cytokinesis in plant and animal cell
Explain the Term Spindle
Name the following:
The part of the cell associated with heredity.
Give Technical Terms
The stage at which the formation of chiasmata occurs.
Complete the following sentence with appropriate word :
Chromosomes are _________ material.
Multiple Choice Question:
After mitotic cell division, a female human cell will have
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. |
Define euploidy.
The region of the chromosome where the spindle fibres get attached during cell division ______
The loss of one or more chromosomes in ploidy is called ______.
______ is a sudden permanent heritable change that can occur in the gene, in the chromosome or chromosome number.
Identify the TRUE statements with respect to aneuploidy.
- When the chromosome number is not the exact multiple of the haploid set, it is described as aneuploidy.
- Aneuploidy is only addition of one or more chromosome(s) to the total number of chromosomes in a cell.
- Aneuploidy is further classified as hypoploidy and hyperploidy.
