Differentiation of organs and tissues in a developing organism, is associated with which of the following?

Developmental mutations

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Differential expression of genes

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Lethal mutations

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Deletion of genes

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Solution

The correct option is A Differential expression of genes
Differential gene expression: The three postulates are:
1. Every cell nucleus contains the complete genome established in the fertilised egg. DNAs of all differentiated cells are identical.
2. The unused genes in differentiated cells are not destroyed or mutated, and they retain the potential for being expressed.
3. Only a small percentage of the genome is expressed in each cell, and a portion of the RNA synthesized in the cell is specific for that cell type.

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