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प्रश्न
Explain the inheritance of sex-linked characters in human being.
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उत्तर
Haemophilia is commonly known as bleeder’s disease, which is more common in men than women. This hereditary disease was first reported by John Cotto in 1803. Haemophilia is caused by a recessive X-linked gene. A person with a recessive gene for haemophilia lacks a normal clotting substance (thromboplastin) in blood, hence minor injuries cause continuous bleeding, leading to death. The females are carriers of the disease and would transmit the disease to 50% of their sons even if the male parent is normal. Haemophilia follows the characteristic criss - cross pattern of inheritaitce.
संबंधित प्रश्न
Give one example A nitrogenous base in DNA
Name anyone X-linked disease found in humans.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Colour blindness is a Y-linked character.
Long answer type question.
Explain cris-cross inheritance with suitable example.
Haemophilia is more common in males because it is a ____________.
What is criss-cross inheritance?
Why are sex linked recessive characters more common in the male human beings?
In which of the following case colour blind daughter will be born?
What would be the progeny obtained if a haemophilic male marries a female with normal blood clotting?
If a colour blind man marries a normal visioned woman, what is the percentage of offsprings showing colour blindness phenotypically?
