Most striking example of point mutation is found in a disease called

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4.Principles of Inheritance and Variation

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The most striking example of point mutation is found in a disease called

Night blindness

Thalassemia

Down's syndrome

Sickle-cell anaemia

(AIPMT-1995)

Solution

(d)Sickle cell Anaemia is a hereditary disorder of autosomal nature which is caused by mutation of the gene controlling $\beta – $chain of haemoglobin.

Standard 12

Biology

A woman has a haemophilic son and three normal children. Her genotype and that of her husband with respect to this gene would be

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$A$ : The posssibility of a female becoming a haemophilic is extremely rare.
$R$ : Mother of such a female has to be carrier and father should be haemophilic

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All sons of a couple are colourblind because

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If a colour blind man marries a woman who is homozygous for normal vision, the probability of their son being colour blind is ………

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The most important example of point mutation is found in a disease called

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The most striking example of point mutation is found in a disease called

Solution

Similar Questions

A woman has a haemophilic son and three normal children. Her genotype and that of her husband with respect to this gene would be

$A$ : The posssibility of a female becoming a haemophilic is extremely rare. $R$ : Mother of such a female has to be carrier and father should be haemophilic

All sons of a couple are colourblind because

If a colour blind man marries a woman who is homozygous for normal vision, the probability of their son being colour blind is ………

The most important example of point mutation is found in a disease called

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$A$ : The posssibility of a female becoming a haemophilic is extremely rare.
$R$ : Mother of such a female has to be carrier and father should be haemophilic