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प्रश्न
Why are sex linked recessive characters more common in the male human beings?
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उत्तर
Sex linked inherited traits are more common in males than females because, males are hemizygous and therefore express the trait when they inherit one mutant allele.
संबंधित प्रश्न
Differentiate between:
monohybrid and dihybrid cross (phenotypic ratio)
A woman has normal vision but her father was colour blind. If she is married to a colour blind person, report on the occurrence of the disease in the progeny.
A family consists of two parents and their five children and the pedigree chart shown below shows the inheritance of the trait colour blindness in them.
How many daughters and how many sons have been born in the family?
A woman had normal vision, but her father was colourblind. She marries a man, who is colourblind.
Find out the probability of the first child being colourblind, whether it is a boy or girl.
A haemophilic man marries a carrier women. Find out the probability of their offsprings being haemophilic.
Short Answer Question.
Observe the given pedigree chart and answer the following question.
Give an example of a trait in human beings which shows such a pattern of inheritance.
Haemophilia is more common in males because it is a ____________.
Inheritance of hypertrichosis occurs directly from ____________.
A man is haemophilic. It indicates that he ______.
Give examples of X-linked traits.
