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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
Briefly explain the term ‘Mutation’.
Expand the following biological abbreviations : DNA
Give technical terms for A sudden heritable change in the gene
Name anyone X-linked disease found in humans.
Explain the Term Linkage.
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.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
A colourblind male cannot distinguish any colour.
Identify the CORRECT statement from the following.
Which of the following is also known as Bleeder's disease?
If a colour blind man marries a normal visioned woman, what is the percentage of offsprings showing colour blindness phenotypically?
