Linkage in Drosophila was first discovered by

  • A

    Morgan

  • B

    Bateson and Punnet

  • C

    Sturtevant

  • D

    Bridges

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Genes $A, B$ and $C$ are linked. Genes $A$ and $B$ are more close than $A$ and $C.$ Find out the correct option for the given statements

$I.$ $A$ might be before $B$ and $C$

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