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प्रश्न
A man having blood group O marries a woman having blood group B and they have a daughter. What will be the blood group of the daughter?
उत्तर
The answer to this question depends on whether the blood group B of the woman has gene combinationIBIB or IBIO.
In the first case (i.e., when the blood group B has genotype IBIB), the daughter will have blood group B. This is because here the gene IB is dominant over gene IO.
In the second case (i.e., when the blood group B has genotype IBIO), there stands an equal chance for the genotype of the daughter's blood to be either IBIO or IOIO. Due to this, there is an equal chance for the daughter to acquire blood group B or blood group O.
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संबंधित प्रश्न
How do Mendel’s experiments show that the traits may be dominant or recessive?
In one of his experiments with pea plants, Mendel observed that when a pure tall pea plant is crossed with a pure dwarf pea plant in the first generation, F1, only tall plants appear.
(a) What happens to the traits of the dwarf plants in this case?
(b) When the F1-generation plants were self-fertilised, he observed that in the plants of the second generation, F2, both tall plants and dwarf plants were present. Why it happened? Explain briefly.
List any two contrasting characters other than height that Mendel used in his experiments in pea plants.
Name the first scientist who studied the inheritance of traits from one generation to the next.
What will you get in the F1 and F2 generations in the following cross?
Pure tall pea plant × Pure dwarf pea plant
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A trait in an organism is influenced by ______
One of the following traits cannot be inherited. This one is :
(a) colour of eyes
(b) colour of skin
(c) size of body
(d) nature of hair
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