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प्रश्न
Give examples of X-linked traits.
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उत्तर
Examples of X-linked traits are haemophilia, red-green colour blindness, myopia (near sightedness), Ichthyosis.
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संबंधित प्रश्न
Give scientific reasons : Colour blindness is more common in men than in women.
Briefly explain the term ‘Mutation’.
Correct and rewrite the statements by changing the biological term that is underlined for the statement:
The theory of Inheritance of Acquired Characters was proposed by Watson and Crick.
A family consists of two parents and their five children and the pedigree chart shown below shows the inheritance of the trait colour blindness in them.
On which chromosome is the gene of this trait located?
Inheritance of hypertrichosis occurs directly from ____________.
If a woman has an allele for an X-Linked condition i.e. haemophilia, on one of her X chromosomes then this chromosome can be inherited by ______
Holandric genes are found only in ____________.
A normal man marries a female carrier for sickle cell anemia. What are the chances of having carrier children?
Types of sex- linked genes:
(Haemophilia, Ichthyosis, nephritis, Myopia, Hypertrichosis, Retinitis pigmentosa)
| Column 'A' | Column 'B' | |
| (1) | Completely X- linked genes | ______ |
| (2) | Completely Y- linked | ______ |
| (3) | Incompletely sex-linked genes | ______ |
