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When Morgan carried out crosses involving two X-linked genes in Drosophila, he sometimes observed new phenotypes that were not present in the parents. What did Morgan propose from these observations?
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When Morgan carried out crosses involving two X-linked genes in Drosophila, he sometimes observed new phenotypes that were not present in the parents. What did Morgan propose from these observations?

User Klendi
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Answer:

The point of exchange of genetic mateials in homologous chromosomes when they formed a bivallent by lying side by side is the

CHIIASMATA.i

He conclided that it is at this points that different induvidual genetic mateials of the two X-LINKED drosophilia genes mixed up to give a different phenotype.

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User PapaLazarou
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