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प्रश्न
Two pairs (A & B) of rabbits were crossed, as given below:
- Can you tell which coat colour (black or white) is dominant?
- Is the coat colour sex-linked?
उत्तर
- Black
- No, coat colour is not a sex-linked inheritance. Haemophilia and colourblindness are examples of sex-linked inheritance.
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संबंधित प्रश्न
In a certain species of animals, black fur (B) is dominant over brown fur (b) Show the possible ratio of genotypes and phenotypes of the offspring of the pure breeding different coloured parents.
Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates
Chicken pox, Colour blindness, Haemophilia, Albinism
Choose the correct answer:
Haemophilia is due to recessive gene on __________
A woman with normal vision marries a man with normal vision. They have a colourblind son. Her husband dies and she marries a colourblind man. Show the type of children that might be expected from this marriage and the proportion of each.
What are holandric genes?
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 ______
If a normal visioned woman marries a colour blind man then, ______,
A normal man marries a female carrier for sickle cell anemia. What are the chances of having carrier children?
A plant with red flowers was crossed with another plant with yellow flowers. If F1 showed all flowers orange in colour, explain the inheritance.
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 | ______ |
