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Principles of Inheritance question bank (Zoology)

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Q1.

Given below are two statements :
Statement I : Down's syndrome is caused by the absence of one of the X-chromosomes.
Statement II : Turner's syndrome is caused by the presence of an additional copy of the chromosomes.
In the light of the above statements, choose the correct answer from the options given below :

(A)

Statement I is incorrect but Statement II is correct

(B)

Both Statement I and Statement II are correct

(C)

Both Statement I and Statement II are incorrect

(D)

Statement I is correct but Statement II is incorrect

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Q2.

For a person with blood group ‘O’, which of the following is not a possible combination of parents' blood group genotypes ?

(A)

Father : $I^A I^B$ and Mother : $I^A i$

(B)

Father : $I^A i$ and Mother : $I^B i$

(C)

Father : $I^A i$ and Mother : $I^A i$

(D)

Father : $I^B i$ and Mother : $I^B i$

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