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प्रश्न
Briefly explain the term ‘Mutation’.
उत्तर
Mutation is the sudden change in one or more genes, or in the number or in the structure of chromosomes.
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संबंधित प्रश्न
Differentiate between:
monohybrid and dihybrid cross (phenotypic ratio)
Long answer type question.
In the answer for inheritance of X-linked genes, Madhav had shown carrier male. His answer was marked incorrect. Madhav was wondering why his marks were cut. Explain the reason.
A family has five daughters and expecting sixth child. The chance of its beings a son is
Haemophilia is more common in males because it is a ____________.
A marriage between a colourblind man and a normal woman produces ____________.
Inheritance of hypertrichosis occurs directly from ____________.
Study the following statements and select the correct option.
Statement I: Holandric genes are present on Y chromosome. Statement II: Holandric genes are always inherited from father to son.
If a normal visioned woman marries a colour blind man then, ______,
Holandric genes are located ______.
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 | ______ |
