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A polygenic inherited trait is controlled by three pairs of genes. Two individuals which are heterozygous for three alleles, are crossed with each other. What will be the phenotypic ratio of offspring?
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Important Questions on Principles of Inheritance and Variation
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In which of the following the inheritance takes place only by male :-
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The condition in which only one allele of a pair is present in a diploid organism is known as :-
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A woman with normal vision marries a man with normal vision and gives birth to a colourblind son. Her husband dies and she marries a colourblind man. What is the probability of her children having the abnormality:-
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A single recessive trait which can express its effect should occur on
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Sex-linked disorders are generally:-
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In a cross between individuals homozygous for (a, b) and wild type (++) . In this cross 700 out of 1000 individuals were of parental type. Then the distance between a and b is :-
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Mammary glands in female, moustaches and beard in human males are examples of
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Lack of independent assortment of two genes A and B in fruit fly is due to:
