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प्रश्न
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
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उत्तर
| X-chromosome | Y-chromosome | |
| 1. | Its non-homologous region is longer as compared to the Y-chromosome. | Its non-homologous region is shorter as compared to the X-chromosome. |
| 2. | It is metacentric. | It is acrocentric. |
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संबंधित प्रश्न
Choose the best option out of the four alternatives a, b, c and d
Question 1:
The number of chromosomes in a certain type of cell division is halved. This kind of cell
division occurs in.
(a) Only testis
(b) Only ovary
(c) Both ovary and testis
(d) All body cells
Expand the following biological abbreviations :
DNA
Give Technical Terms
The stage at which chromosomes occurs reach the opposite poles.
Give Technical Terms
The stage at which the formation of chiasmata occurs.
Multiple Choice Question:
How many chromosomes are found in a cell of humans?
The centromere is found at the centre of the ______ chromosome.
The thin thread-like structures found in the nucleus of each cell are called ______.
The sex of the newborn child is a matter of chance and neither of the parents may be considered responsible for it. What would be the possible fusion of gametes to determine the sex of the child?
The two non-sister chromatids of a paired chromosome are attached to each other at ______ during the process of crossing over.
Which of the following statements are correct?
- X chromosome has large amount of euchromatin.
- heterochromatin is genetically inert.
- Both X and Y chromosomes are homologous.
- Crossing over does not take place in sex chromosomes in female.
Choose the correct option.
