. . . . . . $(B)$ . . . . . . used the frequency of recombination between gene pairs on the . . . . . . $(A)$ . . . . . . as a measure of the distance between genes and mapped their position on the chromosome.
$(A) \quad\quad (B)$

  • A
    Morgan $\quad$ Same chromosome
  • B
    Sturtevant $\quad$ Different chromosomes
  • C
    Morgan $\quad$ Different chromosomes
  • D
    Sturtevant $\quad$ Same chromosome

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Thomas Hunt Morgan was awarded the Nobel Prize for his work on:

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Give scientific reasons: Linkage and crossing over of genes are alternatives of each other.

Define/Explain: Linkage.

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