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Sunday, April 1, 2007

Chromosome Theory of Linkage

This theory was proposed by T.H Morgan, he has conducted many experiments in drosophila. He has got Nobel Prize in 1933

It consists of four points they are

Genes that show linkage are situated on same chromosome

Genes are Linearly arranged in Chromosomes

the strength of linkage is directly propotional to the distance between the genes

During the course of inheritance linked genes remain in their original combinations.

Two genes in a heterozygous individual shows “Cis” or “Trans” type of arrangement