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प्रश्न
Write a sentence of the following:
Sheath
उत्तर
Sheath - It is a proteinaeous covering present around the chromosomes.
APPEARS IN
संबंधित प्रश्न
Name the sex chromosomes in human males and females
Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong
Centrosome.Cell wall, Cell membrane, Large vacuoles
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.
During the pairing of chromosomes in meiosis, the ________ chromosomes come to lie side by side.
Choose the correct answer:
Minimum coiling in chromosome is at ______________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ____________
Choose the correct answer:
If after karyokinesis, cytokinesis does not occur, then result would be _____________
Write a sentence of the following:
Centromere
Write a sentence of the following:
Telomere
Complete the following sentence with appropriate word :
The pairing of homologous chromosomes is called _______.
Multiple Choice Question:
After mitotic cell division, a female human cell will have
Name the following:
Cells having a single set of chromosomes.
Name the following:
A specific part of a chromosome that determine hereditary characteristics.
Name the following:
Pair of genes responsible for a particular characteristic.
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. |
The number of chromosomes found in human beings is ______.
Some of the chromosomes have an elongated knob-like appendages known as telomere.
Match the following.
| 1. Autosomes | - | Trisomy 21 |
| 2. Diploid condition | - | 9 : 3 : 3 : 1 |
| 3. Allosome | - | 22 pair of chromosome |
| 4. Down’s syndrome | - | 2n |
| 5. Dihybrid ratio | - | 23rd pair of chromosome |
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
After a mitotic cell division, a human female cell will have ______.
