Linked gene are separated by
Crossing over
Mutation
$(a)$ and $(b)$ both
None of these
(a) Crossing over is separation of linked genes $(T.H.\, Morgan)$.
All the sons are haemophilic and daughter are normal of a haemophilic father and normal mother. This character is
Alkaptonuria is caused due to
Who was the scientist to introduce $ABO$ blood groups
Discontinuous variations are
Identical twins are produced when
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