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Down's syndrome is caused by an extra copy of chromosome number 21. What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder?
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Important Questions on Principles of Inheritance and Variation
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Polyploidy can be induced by the application of
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Given below is the representation of a kind of chromosomal mutation
What is the kind of mutation represented
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When a segment of a chromosome breaks and later rejoins after rotation, it is known as
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In the given human hand pedigree which character is represented and what is the probability of disease Occurrence in fifth child
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A recessive mutant is one which
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Frequency of Down's syndrome increases when the maternal age is
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Addition or deletion of a single nucleotide results in which type of mutation?
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Change in the number of body parts is called
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Turner's syndrome is an example of
